Always check your math

From the California Department of Education:

The 2005 Similar Schools Ranks that were released by the California Department of Education (CDE) on March 21, 2006 are being revised because of a calculation error.

The error is limited to only the 2005 Similar Schools Ranks. The 2005 Statewide Ranks, Academic Performance Index (API) Base, and Growth Targets are unaffected.

The error was caused when the variable other/unknown ethnic was inadvertently left out of the calculations. The Similar Schools Ranks compare a schools API to 100 schools on the following characteristics: pupil mobility, ethnicity, socioeconomic status, percentage of fully credentialed teachers, percentage of English learners, average class size, whether a school operates a multi-track year-round educational program, percentage of grade span enrollments, percentage of students in gifted and talented education program, percentage of students with disabilities, percentage of reclassified fluent-English! -proficie nt students, percentage of migrant education students, and percentage of students in reduced class size for a full day.

The 2005 Similar Schools Ranks for all schools have been removed from the CDE Web site and will be reposted in approximately three weeks as the recalculated data become available.

There’s a whole lot of school districts across the state quietly taking back a whole lot of cheering.

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