Hearing Impairment in Education — Missouri Reference
<!-- Canonical source for: deaf/hard of hearing students, MSD, ASL, cochlear implants, FM systems, captioning, interpreters, deaf culture, audiology, IEP goals for hearing --> <!-- Last content review: 2026-03 -->
Table of Contents
- Definitions & Spectrum of Hearing Loss
- Missouri Infrastructure (MSD, Resource Center on Deafness)
- Identification & Evaluation
- IEP Considerations for Hearing Impairment
- Communication Approaches
- Assistive Technology for Hearing
- Interpreter Services in Schools
- Classroom Accommodations
- Deaf Culture & Identity
- Early Intervention (Birth-3)
- Cochlear Implants in the School Setting
- Auditory Processing Disorder
- Transition Planning
- Physical Environment & Universal Design
- Working with a Teacher of the Deaf (TOD)
- Parent Resources
- IEP Goal Bank — Hearing
1. Definitions & Spectrum of Hearing Loss
IDEA Definitions
- Deafness: a hearing impairment so severe that the child cannot process linguistic information through hearing, with or without amplification, which adversely affects educational performance
- Hearing Impairment: an impairment in hearing, whether permanent or fluctuating, that adversely affects educational performance but is not included under the definition of "deafness"
Degrees of Hearing Loss
| Degree | Decibel Range | Impact |
|---|---|---|
| Slight/Minimal | 16-25 dB | May miss soft speech, whispers, distant speech |
| Mild | 26-40 dB | Misses 25-40% of speech signal; difficulty with soft/distant speech |
| Moderate | 41-55 dB | Misses 50-75% of speech; requires amplification; conversation must be loud |
| Moderately Severe | 56-70 dB | Misses 100% of speech without amplification |
| Severe | 71-90 dB | Speech must be very loud or amplified; relies heavily on visual cues |
| Profound | 91+ dB | Cannot process speech through hearing alone; relies on visual language |
Types of Hearing Loss
| Type | Location | Cause Examples | Educational Impact |
|---|---|---|---|
| Conductive | Outer/middle ear | Ear infections, fluid, earwax, malformation | Often temporary/treatable; may fluctuate |
| Sensorineural | Inner ear/auditory nerve | Genetic, illness, noise damage, ototoxic drugs | Usually permanent; hearing aids or CI may help |
| Mixed | Both outer/middle + inner | Combination of above | Varies |
| Auditory neuropathy spectrum disorder (ANSD) | Auditory nerve/brainstem | Neurological | Sound enters ear but signal is disrupted; amplification may not help consistently |
| Unilateral | One ear only | Various | Often overlooked; difficulty localizing sound, hearing in noise |
Fluctuating Hearing Loss
Many young children experience fluctuating conductive hearing loss due to chronic ear infections (otitis media). This is educationally significant — a child may hear well one week and miss 50% of speech the next. Teachers should watch for inconsistent responses to auditory instruction.
2. Missouri Infrastructure
Missouri School for the Deaf (MSD)
- Location: 505 East Fifth Street, Fulton, MO 65251
- Founded: 1851
- Serves: deaf and hard of hearing students grades K-12, ages 5-21
- Free of charge to all eligible Missouri residents
- Referral: IEP team placement decision made jointly by parents and LEA
- Programs: Stark Elementary, Wheeler Middle/High School
- Communication approach: bilingual — American Sign Language (ASL) and English
- Residential program: dormitory/cottage-style housing; students travel home weekends
- Transportation: MSD provides statewide transportation between campus and designated pickup points
- Superintendent: Christopher Daily, (573) 592-2504
- Website: msd.dese.mo.gov
MSD Resource Center on Deafness (Outreach — Statewide)
- Services to districts throughout Missouri:
- Audiological evaluations and Auditory Processing Disorder evaluations
- FM system leasing program for public schools
- Hearing aid loaner program
- Consultation and technical assistance
- Sign language instruction for families and school staff
- Early intervention support for deaf/HH children ages 3-5 (within 30 miles of MSD)
- Contact: (573) 592-2543
Missouri Commission for the Deaf and Hard of Hearing (MCDHH)
- State agency providing advocacy, communication access, and information
- Interpreter referral services
- Telecommunications access
3. Identification & Evaluation
Universal Newborn Hearing Screening (UNHS)
Missouri law requires hearing screening for all newborns before hospital discharge. Early identification enables intervention before critical language development windows close.
School-Based Hearing Screening
| Grade/Frequency | Requirement |
|---|---|
| Kindergarten entry | Required |
| Grades 1, 3, 5, 7, 9 | DESE recommends |
| Any time a concern arises | Referral to audiologist |
| Students with IEPs for hearing | Annual audiological evaluation |
Evaluation Components
| Assessment | Conducted By | Purpose |
|---|---|---|
| Audiological evaluation | Audiologist (Au.D.) | Type, degree, configuration of hearing loss; hearing aid candidacy |
| Speech-language evaluation | SLP | Receptive/expressive language, speech production, vocabulary, pragmatics |
| Communication assessment | TOD or SLP | Preferred communication mode (ASL, spoken English, cued speech, total communication) |
| Functional listening evaluation | TOD or educational audiologist | How student uses hearing in classroom (with and without technology) |
| Academic assessment | Special educator or TOD | Impact of hearing loss on academic performance |
| Social-emotional assessment | School psychologist | Social skills, self-concept, peer relationships |
4. IEP Considerations for Hearing Impairment
Required IDEA Considerations
IDEA §300.324(a)(2)(iv) requires that for a child who is deaf or hard of hearing, the IEP team consider:
- The child's language and communication needs
- Opportunities for direct communication with peers and professional personnel in the child's language and communication mode
- The child's academic level
- The child's full range of needs, including opportunities for direct instruction in the child's language and communication mode
Key IEP Decisions
| Decision | Options |
|---|---|
| Communication mode | ASL, spoken English (auditory-oral), cued speech, total communication, bilingual (ASL + English) |
| Interpreter services | ASL interpreter, oral interpreter, cued speech transliterator, CART/C-Print |
| Amplification management | Who checks hearing aids/CIs daily? Who troubleshoots? Who maintains FM/DM system? |
| Acoustic environment | Classroom noise levels, FM/DM system, preferential seating, acoustic treatment |
| Language access across settings | How will the student access language in specials, PE, assemblies, field trips, lunch, recess? |
| Captioning | CART, C-Print, auto-captioning, captioned media |
| Note-taking | Peer notetaker, copy of teacher notes, recording permission |
IEP Team Should Include
- Parent(s)
- Teacher of the Deaf (TOD)
- Audiologist or educational audiologist
- Speech-language pathologist
- Interpreter (if student uses one)
- General education teacher
- LEA representative
- Student (when appropriate — especially important for communication mode decisions)
5. Communication Approaches
| Approach | Description | Considerations |
|---|---|---|
| ASL (American Sign Language) | Complete visual language with its own grammar, syntax, and culture | Not a signed version of English; a distinct language; primary language of the Deaf community |
| Auditory-Oral | Emphasizes listening and spoken language; uses hearing aids/CIs; may use speechreading | Requires significant auditory access (typically with CIs or well-fitted hearing aids) |
| Cued Speech | Visual system using hand shapes near the face to distinguish speech sounds that look alike on the lips | Clarifies speechreading; represents English visually |
| Total Communication (TC) | Philosophy of using all available communication methods (sign, speech, gesture, writing, technology) | Not a single method; flexible but can dilute language input if not implemented well |
| Bilingual-Bicultural (Bi-Bi) | ASL as the primary/first language; English (reading/writing) as the second language | Grounded in Deaf cultural identity; research-supported for literacy development |
| Simultaneous Communication (SimCom) | Speaking and signing at the same time | Common in schools but linguistically imprecise — English grammar dominates while ASL features are dropped |
Critical Principle
The IEP team — including the family and, when appropriate, the student — determines the communication approach. No single approach is universally best. The decision should be based on the child's hearing levels, language development, family communication, learning style, and cultural identity.
6. Assistive Technology for Hearing
Personal Amplification
| Device | Function |
|---|---|
| Behind-the-ear hearing aids (BTE) | Amplify sound; most common for children |
| Cochlear implant (CI) | Surgically implanted device that bypasses damaged inner ear; provides electrical stimulation to auditory nerve |
| Bone-anchored hearing system (BAHA) | Transmits sound through bone vibration; for conductive/mixed loss or single-sided deafness |
Classroom Technology
| Technology | Function |
|---|---|
| FM system | Wireless system: teacher wears a microphone/transmitter → signal sent directly to student's hearing aid/CI. Overcomes distance and background noise. |
| DM (Digital Modulation) system | Next-generation FM — Roger systems (Phonak). Better noise management. |
| Soundfield system | Teacher microphone + ceiling/wall speakers amplifying the teacher's voice for the whole classroom. Benefits ALL students. |
| CART (Communication Access Realtime Translation) | Trained captioner types everything said in real time → appears on screen. Used for assemblies, meetings, events. |
| C-Print | Meaning-for-meaning captioning (less verbatim than CART); displayed on a laptop screen at the student's desk. |
| Auto-captioning | AI-generated captions (Google Live Transcribe, Otter.ai, Microsoft Translator). Improving rapidly but not yet reliable enough to replace human captioners for critical content. |
| Visual alerts | Flashing fire alarms, vibrating pager/watch for alerts, visual timers |
| Captioned media | All videos must have captions. No exceptions. |
| Video relay service (VRS) | For phone calls — ASL interpreter on video connects deaf caller to hearing person |
| Video phone (VP) | Direct ASL-to-ASL video calls |
FM/DM System Management in Schools
This is the #1 daily issue. The system only works if:
- The teacher wears the microphone correctly (6-8 inches from mouth, centered on chest)
- The teacher turns it on at the start of class and off during private conversations
- Someone checks the student's hearing aids and FM receiver daily (listening check)
- Batteries/charging is maintained
- The system transfers between classrooms (or each room has a transmitter)
- Substitute teachers are trained on the system (include in sub plans)
7. Interpreter Services in Schools
Types of Interpreters
| Type | What They Do |
|---|---|
| ASL interpreter | Interprets between ASL and spoken English |
| Oral interpreter | Silently mouths words clearly and uses natural gestures for students who speechread |
| Cued speech transliterator | Produces cued speech to represent spoken English visually |
| Deaf interpreter (CDI) | Deaf individual who works as a team with a hearing interpreter; used for complex communication or young children |
Interpreter Standards
- Missouri does not currently require state licensure for educational interpreters, but national certification (RID — Registry of Interpreters for the Deaf) or EIPA (Educational Interpreter Performance Assessment) score of 3.5+ is strongly recommended
- Interpreters are NOT aides, tutors, or disciplinarians — they provide communication access
- Interpreter should be positioned where the student can see both the interpreter and the instructional content
- Teacher should speak to the STUDENT, not to the interpreter ("Tell him..." is incorrect)
- Build in processing time — the interpreter is always a few seconds behind the speaker
Interpreter in the IEP
If a student needs an interpreter, it must be documented in the IEP as a related service or supplementary aid/service, specifying: type of interpreter, hours/settings, and whether the interpreter should attend specials, assemblies, field trips, etc.
8. Classroom Accommodations
Environmental
- Reduce background noise — carpet, tennis balls on chair legs, acoustic panels, close doors/windows, turn off HVAC when possible
- Optimal seating — face-to-face with teacher; able to see all speakers; near front but with full visual field of the room
- Good lighting on the teacher's face — essential for speechreading; don't stand in front of windows (backlit face is unreadable)
- Minimize visual distractions behind the teacher (busy bulletin boards directly behind teacher's position)
- FM/DM system functioning every period
- Visual fire alarms (ADA requirement)
Instructional
- Face the student when speaking — don't talk while writing on the board, walking away, or looking at a screen
- Don't cover your mouth (hands, papers, masks obstruct speechreading)
- Repeat peer comments before responding (the student may not have heard classmates)
- Caption ALL media — videos, audio clips, announcements
- Pre-teach vocabulary — new terms with visual supports before the lesson
- Visual supports for everything — written agendas, graphic organizers, anchor charts, visual instructions
- Check for understanding frequently — "Did you hear me?" is NOT a check. Ask content questions. Have the student paraphrase.
- Provide written instructions in addition to verbal
- Reduce language complexity if needed — use clear, direct sentences (not simplified concepts, just clearer language)
- Signal topic changes clearly ("We're done talking about fractions. Now we're going to talk about geometry.")
Assessment
- Extended time (processing through an interpreter takes longer; reading may take longer for students whose first language is ASL)
- Interpreter during testing (for directions and content that is not testing language/reading)
- Preferential seating (away from noise sources)
- Separate room (if using interpreter or FM system)
- Captioned or transcript versions of any audio content
- Signed administration of tests when permitted by test publisher
Social
- Facilitate communication between deaf and hearing peers (teach basic signs to classmates)
- Ensure the student is included in group work (assign roles, use visual communication tools)
- Lunch, recess, and unstructured time — the interpreter may not be present; plan for access
- Deaf awareness education for the class (age-appropriate — what is deafness? how do hearing aids work? basic signs)
- Connect with Deaf peers if the student is the only deaf student in the school (MSD events, Deaf community events, online connections)
9. Deaf Culture & Identity
Key Concepts for Educators
- Deaf (capital D) refers to cultural identity — membership in the Deaf community, use of ASL, shared values and experiences
- deaf (lowercase d) refers to audiological status — the physical condition of not hearing
- Many Deaf people do not view deafness as a disability but as a linguistic and cultural difference
- Language deprivation — when a deaf child does not have access to a fully accessible language (either spoken through amplification OR signed) in the first years of life, it can cause permanent cognitive and linguistic harm. This is a critical equity issue.
- Deaf gain — the concept that deafness brings unique perspectives, cognitive strengths, and cultural richness rather than only loss
Educator Responsibilities
- Respect the family's and student's communication choices
- Provide full language access in the chosen communication mode — not partial access
- Recognize that isolation is the biggest challenge for many deaf students in general education (especially if they are the only deaf student)
- Connect families with the Deaf community and Deaf role models
- Never prohibit a student from signing (historically, sign language was banned in many schools — this caused significant harm)
10. Early Intervention (Birth-3)
Missouri First Steps
- Part C early intervention for infants/toddlers with hearing loss
- Family-centered services in natural environments (home, childcare)
- IFSP (Individualized Family Service Plan) developed with the family
- Key services: speech-language therapy, audiology, family education on communication approaches, ASL instruction for families, parent-to-parent support
Critical Period
Research consistently demonstrates that language intervention before 6 months of age produces significantly better language outcomes for deaf children, regardless of communication mode. Early identification through UNHS + immediate early intervention is essential.
Transition to Part B (Age 3)
- Planning begins 90 days before the child's 3rd birthday
- IEP must be in effect by the 3rd birthday
- MSD's early childhood program (within 30 miles of Fulton) serves ages 3-5
- LEA may also provide preschool ECSE services locally
11. Cochlear Implants in the School Setting
What Schools Need to Know
- A cochlear implant (CI) is a surgically implanted device — the school cannot adjust internal settings
- The external processor (the part the student wears) can be managed at school
- Staff should know: how to turn the processor on/off, how to change batteries/charge, basic troubleshooting (reboot, check coil connection), and when to contact the audiologist
- A CI does NOT produce "normal hearing" — the student still has a hearing impairment and needs accommodations
- Some students have bilateral CIs (both ears); some have a CI on one side and a hearing aid on the other (bimodal)
FM/DM Integration
- FM/DM systems can connect wirelessly to most CI processors
- The audiologist programs the CI to work with the FM receiver
- Critical: make sure the FM system is set correctly for the CI (different from hearing aid settings)
Water, Sports, PE
- External processor should be removed for swimming and contact sports (or protected with a waterproof cover)
- Static electricity can damage CI processors — be cautious with plastic slides, bouncy houses
- The student should have a safe storage place for the processor during these activities
12. Auditory Processing Disorder
What It Is
Auditory Processing Disorder (APD) affects how the brain processes auditory information — hearing is typically normal, but the student struggles to understand speech, especially in noise. It is NOT a hearing loss, but the educational impact can be similar.
School Accommodations for APD
- FM/DM system (teacher microphone → direct to student)
- Preferential seating (near teacher, away from noise)
- Visual supports for all auditory instruction
- Reduced background noise
- Pre-teaching vocabulary
- Repetition and rephrasing (not just repeating louder)
- Written instructions in addition to verbal
- Extended time for auditory processing
Eligibility
APD alone may qualify a student under "Other Health Impairment" or may be addressed through a 504 plan if it substantially limits learning.
13. Transition Planning
Employment and Post-Secondary
| Resource | Service |
|---|---|
| Missouri Vocational Rehabilitation (VR) | Pre-employment transition services, job placement, on-the-job support, AT for the workplace |
| MSD Transition Programs | Career exploration, work experience, independent living |
| MCDHH | Interpreter services, advocacy, employer education |
| National Technical Institute for the Deaf (NTID/RIT) | Post-secondary education for deaf students (Rochester, NY) |
| Gallaudet University | The only university designed specifically for deaf students (Washington, DC) |
Transition IEP Goals Should Address
- Self-advocacy for communication access (requesting interpreters, captioning, accommodations)
- Technology skills for the workplace (captioned phone, email, video relay)
- Independent living (managing communication in the hearing world — ordering food, medical appointments, banking)
- Driver's education considerations (visual-only driving — no audio cues)
- Social and community access (Deaf community connections, hearing world navigation)
- Post-secondary planning (accommodations at college, disability services registration)
14. Physical Environment & Universal Design
Acoustic Standards
- ANSI/ASA S12.60 recommends background noise ≤35 dB and reverberation time ≤0.6 seconds in classrooms
- Acoustic treatments: carpeting, acoustic ceiling tiles, curtains, wall panels, door seals
- Avoid open-concept classrooms for students with hearing loss
Visual Access
- Visual fire alarms (strobe lights) — ADA requirement
- Visual announcements (PA announcements should also be displayed on screens or delivered in writing)
- Clear sightlines throughout the room (students need to see the teacher, interpreter, board, and classmates)
- Circular or horseshoe seating for discussions (so the student can see all speakers)
- Visual bells/timers for transitions
15. Working with a Teacher of the Deaf (TOD)
Role of the TOD
- Certified specialist with endorsement in Deaf/Hard of Hearing education
- Provides direct instruction in language, communication, self-advocacy, and ECC areas
- Consults with general education teachers on accommodations and modifications
- Manages hearing technology (hearing aid checks, FM system management)
- Provides pre-teaching and post-teaching of vocabulary and concepts
- May serve itinerantly (traveling between schools) or in a self-contained setting
- Critical shortage area in Missouri — many districts have difficulty finding qualified TODs
Classroom Teacher Responsibilities
- Learn to use the FM/DM system correctly
- Face the student when speaking
- Caption all media — no exceptions
- Repeat peer comments
- Provide materials to the TOD in advance for pre-teaching
- Include the student in ALL activities (don't pull them out for interpreting convenience)
- Learn some basic signs (if the student uses ASL) — even a few signs show respect and effort
16. Parent Resources
| Resource | Contact |
|---|---|
| Missouri School for the Deaf | msd.dese.mo.gov / (573) 592-4000 |
| MSD Resource Center on Deafness | (573) 592-2543 |
| MCDHH (Missouri Commission for the Deaf and Hard of Hearing) | mcdhh.mo.gov |
| MPACT (Missouri Parents Act) | missouriparentsact.org |
| Hands & Voices | handsandvoices.org (national parent organization — unbiased on communication mode) |
| AG Bell Association | agbell.org (spoken language advocacy) |
| National Association of the Deaf (NAD) | nad.org |
| Laurent Clerc National Deaf Education Center | clerccenter.gallaudet.edu |
| Gallaudet University | gallaudet.edu |
17. IEP Goal Bank — Hearing
Language Development Goals
- [Student] will comprehend [grade-level/adapted] vocabulary in [communication mode] with 80% accuracy across 3 consecutive sessions as measured by curriculum-based assessment by [date].
- [Student] will produce grammatically correct English sentences (written) containing [target structure] with 80% accuracy on written assignments by [date].
- [Student] will retell a [grade-level] story including [#] story elements in [ASL/spoken English] with 80% accuracy by [date].
Auditory/Listening Goals (for students using spoken language)
- [Student] will discriminate between [target sounds/words] in a quiet environment with 90% accuracy by [date].
- [Student] will follow [#]-step spoken directions in the classroom with FM system with 80% accuracy by [date].
- [Student] will identify when a communication breakdown has occurred and use a repair strategy (ask for repetition, ask for clarification, move closer) on 4 of 5 opportunities by [date].
Technology/Self-Management Goals
- [Student] will independently perform a daily listening check of their hearing aids/CI and report malfunctions to the teacher on 5 of 5 school days by [date].
- [Student] will independently manage their FM system (turn on, pair, troubleshoot, charge) with no adult prompting by [date].
Self-Advocacy Goals
- [Student] will explain their hearing loss and communication needs to a new teacher or adult using [a prepared script / their own words] covering [3+ key points] on 4 of 5 opportunities by [date].
- [Student] will request accommodations (captioning, interpreter, seating, repetition) in a new setting without prompting on 4 of 5 opportunities by [date].
- [Student] will advocate for communication access in a group setting by requesting that one person speak at a time or by asking a peer to repeat what was said, on 4 of 5 observed opportunities by [date].
Social Goals
- [Student] will initiate a conversation with a hearing peer using [ASL / spoken English / written communication] during unstructured time at least [#] times per week for 4 of 5 weeks by [date].
- [Student] will use appropriate turn-taking in a group conversation (visual attention, waiting for turn, appropriate volume) on 4 of 5 opportunities by [date].
Nonpartisan informational resource for Missouri — District 2 — not legal, medical, or financial advice. Source: dougdevitre/access-to-education.
Paid for by Matt Grant for Congress.
