CA Science Test - CAST

California Science Test - CAST

In 2019 all LEAs will administer the first operational version of the CAST or the CAA-Science field test to all students enrolled in grades 5, 8, and students in grade 12 who have did not participate in the 2018 CAST Field Test or CAA Science Year Two Pilot. The CAST testing window opens January 9, 2018. Districts may elect to administer the high school assessment to students enrolled in grades 10 and 11 (see "High School Administration Guidance" below for details).

In the fall of 2018, CDE will make available assessment results in the form of preliminary indicators from the 2018 CAST field test (see the "Field Test Results" tab below for details).

CAST Assessment Design and First Operational Assessment

On November 8, 2017 the California State Board of Education voted to approve a revision to the high-level test design for the California Next Generation Science Standards General Summative Assessment - known as the CAST. The following table summarizes the operational CAST assessment plan for the first year:

Segment A

Segment B

Segment C

CA NGSS PEs measured by grade/grade span

Gr. 5: 3-5 PEs*
Gr. 8: 6-8 PEs
Gr. 10/11/12: All High School PEs

Gr. 5: 3-5 PEs*
Gr. 8: 6-8 PEs
Gr. 10/11/12: All High School PEs

Gr. 5: 3-5 PEs*
Gr. 8: 6-8 PEs
Gr. 10/11/12: All High School PEs

Number and Types of Items

32–34 discrete (stand-alone) items that include selected-response, technology enhanced, machine-scorable items

Two performance tasks (PTs) (with 4–6 item sets)

Six or seven discrete items that includes selected-response, technology enhanced items (like Segment A) OR one PT (like Segment B, with 4–7 item sets)

Scope & Depth of Measurement

Wide breadth - measures a broad sample of CA NGSS PEs

Deep - measures a targeted sample of of a few PEs provided in item sets

Broad and deep - measures a full range of PEs for each grade span

Reporting Level

Contributes to Student and Group Score

Contributes to Student and Group Score

Contributes to Group Score

*Includes foundational concepts that are addressed in kindergarten through grade two (K-2).

Source: California Department of Education: https://www.cde.ca.gov/be/ag/ag/yr17/documents/nov... and https://www.cde.ca.gov/be/pn/im/documents/memo-pptb-adad-aug18item01.docx

CAST Blueprints

Assessment blueprints document the content standards to be measured using the assessment. The CAST Blueprints were approved by the CA State Board of Education on November 8, 2017. The blueprint is available from CDE.

CAST General Achievement Level Descriptors and Score Reporting Structure (Operational Assessment)

On November 8, 2017, the SBE also approved CDE’s recommendation for the CAST general Achievement Level Descriptors (ALD) and Score Reporting Structure. General ALDs provide descriptions of student performance level expectations across four levels. These general ALDs will be used to develop both student level reporting of performance and grade-level specific ALDs.

Level

Description

4

The student has exceeded the performance expectations of the California Next Generation Science Standards (CA NGSS) by demonstrating a thorough understanding of the CA NGSS and a thorough ability to apply his or her knowledge and skills through the CA NGSS Science and Engineering Practices, Disciplinary Core Ideas, and Crosscutting Concepts.

3

The student has met the performance expectations of the CA NGSS by demonstrating an adequate understanding of the CA NGSS and an adequate ability to apply his or her knowledge and skills through the CA NGSS Science and Engineering Practices, Disciplinary Core Ideas, and Crosscutting Concepts.

2

The student has nearly met the performance expectations of the CA NGSS by demonstrating a partial understanding of the CA NGSS and a partial ability to apply his or her knowledge and skills through the CA NGSS Science and Engineering Practices, Disciplinary Core Ideas, and Crosscutting Concepts.

1

The student has not met the performance expectations of the CA NGSS by demonstrating a minimal understanding of the CA NGSS and a minimal ability to apply his or her knowledge and skills through the CA NGSS Science and Engineering Practices, Disciplinary Core Ideas, and Crosscutting Concepts.

Source: California Department of Education: https://www.cde.ca.gov/be/ag/ag/yr17/documents/nov...

The operational CAST score reporting structure will include an overall scale score and three sub-scores, one each for three-dimensional Earth/space, life, and physical sciences. Assessment items measuring PEs from the Engineering, Technology, and Application of Science domain will be set in the context of life, physical, or Earth and space sciences and those items will be reported according to one of those three domains in the reporting structure.

Source: California Department of Education: https://www.cde.ca.gov/be/ag/ag/yr17/documents/nov...

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