casas presentation

8/2/2019 CASAS Presentation

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Comprehensive Adult Student

Assessment System (CASAS)Life & Work Series

Reading & Listening

Floyd, Kurdi, & Modica



Description: Test Purpose● Standardized - Criterion-Referenced - Discrete-Point -

Formative & Summative - Objective - Indirect -● Can be used as: Placement - Progress - Achievement Test

● Test-Takers Include:

● Assesses:○ Reading & Listening Skills

● Uses:○ For teachers/administrators to identify the literacy needs pre-

and post-instruction of learners.○ Monitoring the student progress throughout literacy levels.○ Can be used for course placement into a specific level or

baseline for benchmarking

English as a Second Language Adult Basic Education

English Language Learners Adult Secondary Education

Vocational ESL General Education Development



Description: Test Content

● CASAS assessments consist of a pre-test, course

instruction and post-test● No strict timing, but about an hour for each assessment● Test can be paper/pencil or computer based● Selected response items are multiple choice

● On Reading tests, test takers read short passages, graphs,maps, charts, signs, pictures etc. and answer multiplechoice questions

● On Listening tests, test takers listen to a short dialogue or discussion and might see multiple pictures that corresdpond

to multiple choice answers



Description: Scoring/Rating Procedure● How is the test scored?

○ eTests are scored via computer

○ Paper-and-pencil tests scored manually ● What rating procedure takes place?

○ The number of correct items is converted to a scaled score whichdetermines placement.

● Reporting/Interpreting results:○ Teachers/administrators have the option to use TOPSpro assessment

software that tracks student progress over the course and throughouttheir level progression.

○ Item tasks assess certain competency abilities and there is a scoringrubric that shows strengths and weaknesses of these competencies of

the learner.○ With eTests, immediate feedback to learner and teacher/administrator

is given pertaining to level and/or placement. Manual scoringimmediate for T/A, & they report results to student.



Life & Work Reading Form 83-obtained from Olsen, 2011



Evaluation: Reliability Evidence

● Test administration reliability

● Parallel forms reliability

● Internal consistency reliability (KR-20)



Descriptive statistics for each series are presented—Reading Life Skills

Descriptive Statistics for the Life Skills Reading SeriesNote: These numbers were run based on data from 1996 through 2000.

The initial item analyses were run for all items with sample sizes larger than 300

Form # N# of Items

Mean RawScore

StandardDeviation

MeanP-Value

Mean PointBiserial KR-20

27 18,369 30 23.38 6.93 .779 .850 .931

28 12,264 30 24.51 6.28 .817 .875 .925

31 28,996 24 16.96 6.20 .706 .598 .919

32 17,259 24 15.23 6.49 .635 .594 .918

32X 2,447 27 15.84 6.86 .587 .534 .902

33 29,500 32 18.68 8.04 .584 .535 .918

34 27,673 32 19.78 7.70 .618 .519 .911

34 X 27,721 35 22.22 7.05 .635 .614 .885

35 27,605 38 20.93 8.11 .551 .458 .897

36 21,101 38 21.05 7.74 .554 .441 .886

37 7,363 40 17.22 9.06 .431 .466 .908

38 4,876 40 18.52 9.19 .463 .474 .912



Form # N# of

Items

RawScoreMean

StandardDeviation

Mean P-Value

MeanPoint

Biserial KR-20

51 8,915 34 19.99 8.80 .588 .544 .927

52 5,716 34 20.78 8.16 .611 .519 .916

53 5,655 30 16.69 7.26 .556 .501 .896

54 4,324 30 16.44 6.66 .548 .458 .870

55 3,273 25 13.18 5.76 .527 .474 .855

56 2,616 25 13.68 5.52 .547 .453 .838

Note: The 51L and 52L tests appear in both the ECS and Life Skills series *Note: These numbers were run based on data from 1996 through 2000. Initial item analyses were run for all items with samplesizes larger than 300

Descriptive statistics for each series arepresented--

Listening Life Skills



Evaluation: Validity Evidence

● Criterion-related validity

● Construct validity

● Content-related validity



Critique

● All discuss our critiques



Sample Test Item: LWS Reading Skills

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