Assessment and Planning · 8 min read
Assessment Types and Methods
Overview of Assessment in Adapted Curriculum Settings
Assessment in special education adapted curriculum serves distinct purposes compared to general education assessment. For students with significant cognitive disabilities, assessment must capture functional abilities, adaptive behaviors, and progress toward individualized goals rather than grade-level academic standards alone. Effective assessment informs instruction, documents progress, and ensures accountability while respecting the unique learning profiles of students served under adapted curriculum frameworks.
Purposes of Assessment
Assessment serves multiple purposes in adapted curriculum contexts. Screening identifies students who may require additional evaluation or support services. Diagnostic assessment determines specific areas of strength and need, informing eligibility decisions and instructional planning. Progress monitoring tracks student growth toward IEP goals and objectives. Summative assessment evaluates overall achievement and program effectiveness. Each purpose requires different tools, timelines, and interpretation frameworks.
| Purpose | Question it answers | Typical tool |
|---|---|---|
| Screening | Who may need a closer look? | Brief checklist or developmental screener |
| Diagnostic / eligibility | Does the student have a disability, and what are the needs? | Comprehensive evaluation: cognitive, adaptive, communication, motor |
| Instructional planning | What should we teach next? | Ecological inventory, task-analysis probe, criterion-referenced checklist |
| Progress monitoring | Is instruction working? | Frequent probes graphed against an aim line |
| Accountability | Is the student meeting alternate standards? | Georgia Alternate Assessment 2.0 (GAA 2.0) |
Formal Assessment
Formal assessments are standardized instruments administered and scored according to specific protocols. These include norm-referenced tests that compare student performance to a representative sample of same-age peers. For students with significant cognitive disabilities, standardized assessments often require accommodations or modifications to ensure valid results. Common formal assessments used in adapted curriculum settings include adaptive behavior scales, developmental assessments, and alternate achievement measures.
Norm-referenced assessments provide standard scores, percentile ranks, and age or grade equivalents. These scores help determine eligibility for special education services and establish baseline performance levels. However, norm-referenced tests have limitations for students with significant disabilities, as floor effects may prevent accurate measurement of skills. Many students score at or below the lowest measurable range, limiting the diagnostic utility of these instruments.
Criterion-referenced assessments measure student performance against predetermined standards or criteria rather than peer comparisons. These assessments identify specific skills a student has mastered and those requiring instruction. Criterion-referenced measures are particularly useful for IEP goal development and progress monitoring because they directly link assessment to instructional targets.
| Feature | Norm-referenced | Criterion-referenced |
|---|---|---|
| Compares the student with | A norm group of same-age peers | A fixed skill standard or criterion |
| Typical scores | Standard scores, percentile ranks | Percent correct, steps independent, mastered / not yet |
| Best use | Eligibility and comparison with peers | Planning instruction and writing IEP objectives |
| Caution for this population | Floor effects: very low scores say little about what to teach | Must sample skills the student needs in real settings |
Informal Assessment
Informal assessments include non-standardized methods that provide flexible, individualized information about student performance. These approaches allow teachers to gather data in natural contexts and adjust assessment procedures to accommodate individual student needs.
Curriculum-based measurement involves brief, frequent assessments directly tied to instructional content. Teachers administer probes measuring specific skills and graph results to visualize progress over time. For adapted curriculum students, CBM may focus on functional academics, communication responses, or task completion rather than traditional academic metrics.
Observation provides rich qualitative data about student behavior, engagement, and skill application across settings. Systematic observation uses predetermined categories and recording methods to ensure consistency and objectivity. Anecdotal observation captures narrative descriptions of significant events or behaviors. Both approaches inform understanding of student functioning beyond what standardized tests reveal.
Portfolio assessment compiles student work samples demonstrating progress and achievement over time. Portfolios may include photographs, video recordings, work products, and teacher documentation. This approach captures growth in functional skills that traditional assessments cannot measure and provides authentic evidence of student learning.
Task analysis assessment breaks complex skills into component steps and evaluates student performance on each step. This method identifies exactly where instruction should focus and documents incremental progress toward skill mastery. Task analysis is essential for teaching functional and adaptive skills to students with significant cognitive disabilities.
Ecological Assessment
Ecological assessment examines student performance within natural environments where skills will be used. This approach evaluates the demands of specific settings, identifies discrepancies between environmental expectations and student abilities, and guides instruction toward functional outcomes.
Components of ecological assessment include inventory of environments where the student currently functions or will function in the future, analysis of activities and skills required in those environments, assessment of student performance on identified skills, and identification of adaptations or supports needed for successful participation. This assessment approach ensures instructional relevance and promotes generalization of learned skills.
Functional Behavioral Assessment
Functional behavioral assessment systematically identifies the purpose or function of challenging behaviors. FBA involves gathering information through multiple methods to develop hypotheses about why behaviors occur and what maintains them.
FBA methods include indirect assessment through interviews and rating scales, direct observation using antecedent-behavior-consequence recording, and functional analysis involving systematic manipulation of environmental variables. The assessment process identifies setting events, antecedent triggers, behavior definitions, and maintaining consequences. This information guides development of function-based behavior intervention plans.
| Function | Example | Teach instead |
|---|---|---|
| Attention (social positive) | Screams until an adult comes over | Tap a switch or sign to request attention |
| Escape / avoidance (social negative) | Swipes materials off the table during work | Request a break or help with a card or device |
| Tangible | Grabs a peer's tablet | Request the item and wait for a turn |
| Automatic / sensory | Rocks or hand-flaps when unoccupied | Provide matched, engaging activities |
Adaptive Behavior Assessment
Adaptive behavior assessment measures practical skills needed for everyday functioning. The three domains of adaptive behavior include conceptual skills (language, reading, writing, money, time), social skills (interpersonal skills, responsibility, self-esteem, following rules), and practical skills (daily living activities, occupational skills, safety).
Common adaptive behavior instruments include the Vineland Adaptive Behavior Scales, ABAS (Adaptive Behavior Assessment System), and Scales of Independent Behavior-Revised. These instruments use informant interviews or questionnaires completed by parents, teachers, or caregivers who know the student well. Adaptive behavior assessment is required for intellectual disability determination and provides essential information for IEP planning.
| Domain | Examples of skills |
|---|---|
| Conceptual | Language, reading, writing, money, time, number concepts, self-direction |
| Social | Interpersonal skills, responsibility, following rules, avoiding victimization |
| Practical | Personal care, toileting, eating, travel, safety, using the phone, occupational skills |
Alternate Assessment
Students with significant cognitive disabilities participate in alternate assessments aligned with alternate achievement standards. These assessments measure progress toward grade-level content standards at reduced depth, breadth, and complexity appropriate for students with the most significant cognitive disabilities.
Alternate assessments may use portfolio-based approaches, performance tasks, or selected-response formats with accommodations. Georgia uses the Georgia Alternate Assessment 2.0 (GAA 2.0), a scripted, task-based assessment that a trained test examiner gives to each student one-on-one during the spring testing window. It is not a portfolio: the earlier portfolio version of the GAA has been replaced.
Participation criteria for alternate assessment are strictly defined. Students must have significant cognitive disabilities, need extensive, direct, individualized instruction and substantial supports to make measurable gains in the grade- and age-appropriate curriculum, and be taught to alternate academic achievement standards that are linked to grade-level content. The IEP team makes participation decisions based on established criteria, not disability category alone. Under ESSA, statewide participation in the alternate assessment may not exceed 1% of all students assessed in each subject; the cap applies to the state, never to an individual student's IEP decision.
| Feature | General state assessment (with accommodations) | GAA 2.0 |
|---|---|---|
| Who takes it | Most students with disabilities | Students with the most significant cognitive disabilities |
| Standards | Grade-level achievement standards | Alternate academic achievement standards linked to grade-level content |
| Who decides | IEP team (accommodations) | IEP team, using state participation guidelines |
| Limit | None | Statewide cap of 1% of all students assessed per subject |
| IEP requirement | Annual goals | Annual goals plus benchmarks or short-term objectives |
Assessment Accommodations and Modifications
Accommodations change how assessments are administered without altering what is measured. Common accommodations include extended time, separate setting, read-aloud (for non-reading tests), breaks, and assistive technology. Accommodations must be consistent with those used during instruction and documented in the IEP.
Modifications change what is measured by altering content, format, or expectations. Modified assessments may not yield valid scores comparable to standard administrations. For students in adapted curriculum, modifications are often necessary to obtain meaningful assessment information. The distinction between accommodations and modifications has implications for accountability and score interpretation.
| Accommodation | Modification | |
|---|---|---|
| Changes | How the student accesses or shows learning | What the student is expected to learn or show |
| Standard | Same expectation | Reduced or different expectation |
| Examples | Extended time, breaks, scribe, AAC to answer | Fewer choices, simplified content, alternate standards |
Assistive Technology Assessment
Assistive technology assessment identifies tools and devices that increase, maintain, or improve functional capabilities. The assessment process examines student abilities, environmental demands, and available technology options to recommend appropriate AT solutions.
AT assessment considers multiple domains including communication, mobility, positioning, computer access, daily living, and academics. The assessment team includes the student, family members, educators, and specialists with AT expertise. Assessment results guide AT implementation and training, with ongoing evaluation to ensure effectiveness.
Communication Assessment
Communication assessment for students with significant disabilities examines receptive and expressive communication across modalities. Assessment identifies current communication forms (speech, gestures, behaviors, AAC), functions (requesting, rejecting, commenting, answering), and partners (familiar adults, peers, unfamiliar people).
Comprehensive communication assessment includes formal language measures when appropriate, informal observation of communicative interactions, evaluation of AAC needs and options, and assessment of environmental supports and barriers. Results inform communication goals and AAC implementation decisions.
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