Special Education Dictionary & Glossary for Teachers
Special Education Dictionary & Glossary
Practical Language for Inclusive Teaching, Communication, Behavior, Assessment, and Independence
Purpose of This Glossary
Special education uses terms from many fields, including education, psychology, speech and language, occupational therapy, behavior support, assistive technology, and disability services. This glossary provides clear, practical definitions of common terms for teachers, paraprofessionals, families, and school leaders.
A
A — AAC (Augmentative and Alternative Communication)
Methods that supplement or replace speech for people who have difficulty communicating verbally. AAC may include gestures, pictures, communication boards, tablets, or speech-generating devices.
Accommodation
A change in how a student learns or demonstrates learning without changing the essential learning expectation. Examples include extra time, large print, a quiet workspace, or answering orally instead of in writing.
Adapted Materials
Learning materials changed to make them more accessible, such as simplified layouts, larger print, picture-supported directions, adapted books, or manipulatives.
Adaptive Behavior
Everyday skills needed for independence, including communication, self-care, social skills, safety, and community participation.
Adaptive Equipment
Specialized equipment that helps a student participate more independently, such as adapted scissors, pencil grips, specialized seating, or mobility equipment.
ADHD — Attention-Deficit/Hyperactivity Disorder
A neurodevelopmental condition that may affect attention, impulse control, activity level, organization, working memory, and executive functioning.
Advocacy
Speaking or acting to protect a person’s rights, needs, opportunities, or access to services.
Antecedent
Something that happens immediately before a behavior. Identifying antecedents can help teachers understand what may be contributing to a student’s response.
Assessment
A process used to gather information about a student’s knowledge, skills, development, strengths, and support needs.
Assistive Technology (AT)
Any device, software, equipment, or system that helps a student access learning, communicate, participate, or become more independent.
Autism / Autism Spectrum Disorder
A neurodevelopmental condition associated with differences in communication, social interaction, sensory processing, interests, routines, and patterns of behavior. Autistic students vary greatly in their abilities and support needs.
B
Baseline Data
Information collected about a student’s current performance before an intervention or new teaching strategy begins.
Behavior
Anything a person does that can be observed or described. Behavior can communicate needs, emotions, discomfort, avoidance, confusion, or attempts to gain access to something.
Behavior Intervention Plan (BIP)
A structured plan designed to prevent challenging situations, teach useful replacement skills, and respond consistently to behavior.
Behavior Trigger
An event, situation, sensory experience, demand, or condition that may contribute to a behavioral response.
Break Card
A visual or communication tool a student can use to request a pause from an activity or environment.
C
Calm-Down Area / Regulation Space
A set area where students can use helpful strategies and materials to calm down or manage their feelings. This space should not be used as a punishment by default.
Chunking
Breaking a large assignment, direction, or activity into smaller, manageable steps.
Choice Board
A visual display of options that allows a student to make selections or communicate preferences.
Communication Board
A board containing pictures, symbols, letters, or words that a student can point to or otherwise access to communicate.
Communication Partner
A person who interacts with someone who uses AAC or another communication method and supports meaningful two-way communication.
Comprehension
The ability to understand information that is heard, read, seen, or otherwise communicated.
Core Vocabulary
Frequently used words that can be combined for many communication purposes, such as go, stop, want, more, help, like, not, I, you, and different.
D
Data Collection
Systematically recording information about student performance, communication, behavior, independence, or progress.
De-escalation
Strategies used to reduce distress and help a student regain regulation without unnecessarily increasing demands or confrontation.
Developmental Disability
A broad term describing conditions beginning during development that can affect physical, learning, language, or behavioral functioning.
Differentiated Instruction
Adjusting teaching methods, materials, activities, or response options to address differences among learners.
Disability
A physical, sensory, intellectual, developmental, learning, communication, or other condition that may affect participation in activities or environments, particularly when barriers are present.
Dyscalculia
A learning difficulty associated with understanding numbers, quantities, calculations, or mathematical concepts.
Dysgraphia
A learning difficulty that can affect handwriting, written expression, spelling, or the physical process of writing.
Dyslexia
A learning disability/difference primarily associated with difficulties in accurate or fluent word recognition, decoding, and spelling.
E
Echolalia
Repeating words, phrases, or sounds heard previously. Echolalia may serve meaningful communication, language-processing, or self-regulation functions.
Emotional Regulation
The ability to recognize and manage emotional responses with increasing independence or appropriate support.
Executive Function
Mental processes involved in planning, organizing, remembering instructions, starting tasks, controlling impulses, managing time, and completing activities.
Expressive Language
The ability to communicate thoughts, needs, ideas, and feelings through speech, signs, symbols, writing, AAC, gestures, or other methods.
F
Fine Motor Skills
Small-muscle movements used for activities such as writing, cutting, buttoning, manipulating objects, and using utensils.
First–Then Board
A visual support showing what a student needs to do first and what will happen afterward.
Functional Academics
Academic skills taught in ways that connect directly to everyday life, such as reading signs, using money, measuring ingredients, understanding time, and completing forms.
Functional Behavior Assessment (FBA)
A structured process for identifying factors that may influence a behavior and understanding what function the behavior may serve.
Functional Skills
Practical abilities needed for everyday living, communication, work, safety, self-care, and community participation.
G
Generalization
Using a learned skill with different people, in different settings, with different materials, or in new situations.
Goal
A clearly defined skill or outcome a student is working toward.
Gross Motor Skills
Large-muscle movements involved in activities such as walking, running, jumping, balancing, and climbing.
I
IEP — Individualized Education Program/Plan
A formal individualized educational plan describing a student’s educational needs, goals, supports, services, accommodations, and methods for measuring progress.
Inclusion
Meaningful participation of students with disabilities in educational and community experiences alongside peers, with appropriate supports and access.
Independence
A student’s ability to complete activities, make choices, communicate, solve problems, and participate with decreasing or appropriately individualized support.
Individualized Instruction
Teaching specifically designed around an individual student’s current skills, goals, strengths, and support needs.
Intellectual Disability
A disability characterized by significant limitations in intellectual functioning and adaptive behavior, with onset during the developmental period.
Intervention
A planned teaching strategy or support introduced to address an identified learning, communication, behavioral, developmental, or functional need.
L
Learning Disability
A neurological difference that can affect particular academic skills such as reading, writing, mathematics, listening, or processing information.
Least Restrictive Environment (LRE)
The principle that students with disabilities should be educated with peers without disabilities to the greatest extent appropriate while receiving necessary supports.
Life Skills
Practical abilities required for everyday living, such as communication, personal care, cooking, cleaning, money management, safety, transportation, and decision-making.
M
Manipulatives
Physical objects students use to understand concepts, particularly in mathematics. Examples include counters, blocks, coins, shapes, and number tiles.
Meltdown
A meltdown is a strong reaction to excessive stress, sensory input, trouble communicating, emotional overload, or demands. It should not be seen as intentional misbehavior.
Modification
A change to what a student is expected to learn or demonstrate. Accommodation changes how learning is accessed; modification changes the learning expectation itself.
Multi-Sensory Instruction
Teaching that intentionally incorporates multiple sensory pathways, such as seeing, hearing, touching, and movement.
N
Neurodiversity
The concept that human brains naturally vary in how people think, learn, communicate, process information, and experience the world.
Neurodivergent
A broad term commonly used for people whose neurological development or functioning differs from what is considered typical. It may include autistic people, people with ADHD, dyslexia, and other neurological differences.
Nonspeaking
A term describing a person who does not use spoken language, or uses very little speech, as their primary means of communication. Being nonspeaking does not mean a person cannot think, understand, or communicate.
O
Occupational Therapy (OT)
A therapy profession that supports participation in everyday activities. In schools, OT may address fine-motor skills, sensory processing, handwriting, self-care, positioning, access, and independence.
P
Paraprofessional
A staff member who works under appropriate professional supervision to support students and classroom instruction.
Person-Centered Planning
Planning that places the student’s strengths, preferences, needs, goals, culture, relationships, and future aspirations at the center of decision-making.
Positive Behavior Support
An approach focused on understanding behavior, changing environmental conditions where appropriate, teaching useful skills, and reinforcing positive alternatives.
Presume Competence
The practice of beginning with the assumption that a student is capable of thinking, learning, communicating, and participating while determining what supports are needed.
Processing Time
The amount of time a person needs to understand information and formulate a response.
Prompt
Assistance provided to help a student perform a skill or respond correctly.
Prompt Fading
Gradually reducing assistance as a student becomes more capable of performing a skill independently.
R
Receptive Language
The ability to understand communication received from others.
Reinforcement
A consequence following a behavior that increases the likelihood that the behavior will occur again.
Replacement Behavior
A safer, more appropriate, or more effective behavior taught to meet the same need as a challenging behavior.
Response Mode
The method a student uses to demonstrate knowledge or communicate an answer, such as speaking, pointing, typing, signing, selecting a picture, using AAC, writing, or demonstrating.
S
Self-Advocacy
A person’s ability to communicate preferences, rights, needs, boundaries, goals, and decisions.
Self-Regulation
The ability to manage attention, emotions, sensory experiences, behavior, and physiological responses with appropriate strategies and support.
Sensory Break
A planned or requested opportunity to access activities or an environment that supports regulation.
Sensory Processing
How the nervous system receives, organizes, and responds to sensory information such as sound, light, touch, movement, smell, and body position.
Social Narrative / Social Story
A short, individualized description that helps a student understand a situation, expectation, routine, or social experience.
Special Education
Specially designed instruction and related supports intended to address the individual educational needs of students with disabilities.
Speech-Language Pathologist (SLP)
A professional who assesses and supports communication, speech, language, and related needs.
Strengths-Based Approach
An approach that identifies and builds upon what a student can do, enjoys, understands, and is motivated by while also addressing areas requiring support.
T
Task Analysis
Breaking a complex skill into smaller, teachable steps.
Transition
Moving from one activity, environment, routine, teacher, educational setting, or stage of life to another.
Transition Plan
A structured plan supporting movement toward adulthood, employment, further education, community participation, and independent living.
Trigger
A commonly used term for an event, condition, demand, interaction, or sensory experience that contributes to a person’s stress or behavioral response.
U
Universal Design for Learning (UDL)
An educational framework encouraging teachers to design learning environments with multiple ways for students to engage with learning, access information, and demonstrate understanding.
V
Visual Schedule
A sequence of pictures, symbols, words, or objects showing the activities that will occur during a period of time.
Visual Support
Any visual tool used to improve understanding, communication, predictability, organization, or independence.
Vocational Education
Instruction designed to develop skills related to employment, workplace behavior, job performance, career exploration, and preparation for adult working life.
W
Wait Time
The intentional pause teachers provide after asking a question or giving an instruction so students have sufficient time to process information and respond.
Work System
An organized visual or physical structure that helps a student understand what to do.
Key Distinctions Every Special Education Teacher Should Know
Accommodation vs. Modification
Changes how the student accesses or demonstrates learning.
Changes what the student is expected to learn or demonstrate.
Speech vs. Communication
One form of communication.
Can also occur through AAC, pictures, typing, signing, gestures, writing, eye gaze, communication boards, and assistive technology. A student does not have to speak to have something meaningful to say.
Behavior vs. Communication
Automatically labeling behavior as bad, defiant, lazy, or attention-seeking.
What happened before? What might the student need? What is the student communicating? Is the task accessible? Is the environment overwhelming? What skill could we teach?
Assistance vs. Independence
Whether an adult helped a student complete a task.
How much assistance was required? Can the student do more independently next time?
The Language of an Inclusive Classroom
Final Principle
A diagnosis tells us something about a student but not everything.
The goal of special education terms is not to label or limit children. Instead, these terms help educators understand students’ needs, identify barriers, offer the right support, communicate clearly, and create real opportunities for every learner to succeed.