Average Point Difference
2017 Portrait of the Movement: Average Point Difference
CCSA created the Average Point Difference (APD) to help more easily understand and interpret SBAC scale score results. The APD is a student-weighted average by grade and subject, allowing for fair comparisons across all grade spans and subgroups, and enabling year to year score comparisons of schools’ growth toward proficiency for all students. To view school level APD results, visit our SBAC Snapshot page. For more information on how the APD is calculated, see CCSA's Technical Guide.
The APD compares a school's average scale scores to the state standard for "met" (Level 3). The APD score means that the average student at the school scored that many scale score points above or below the met standard. The graph below compares APD achievement by subject and subgroup for charter and traditional public schools.
Performance data shown are publicly available through the CDE CAASPP data file. Data used in Portrait of the Movement is taken from the Octorber 2016 CAASPP release. All data excludes schools that are designated as alternative school accountability model ("ASAM"), Alternative, or have fewer than 30 valid test scores.
Instructions: Select the school district, testing year, and subject you are interested in viewing using the filter menus at the bottom of the page.
Click the Download button on the bottom right of the frame, then click PDF. Select the following options:
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