Skip to main content
California Department of Education Logo

Independent Study Ratio Calculations

Instructions, examples, and worksheets for calculating independent study ratios.

The independent study ratio calculations are used to determine the average daily attendance (ADA), for students in independent study programs, eligible for general funding. These calculations shall be performed annually by the Local Educational Agencies (LEAs) at the time of, and in connection with, the second principal (P-2) report of ADA. The results of the ratio calculations should be reflected in the P-2 and Annual ADA data submitted to the California Department of Education through the Principal Apportionment Data Collection Software.

LEA-wide ratios

Recent legislation, Chapter 13, Statutes of 2015 (Assembly Bill 104), enacted June 24, 2015, changed the independent study ratios calculations back to a LEA-wide calculation, rather than a calculation by grade span.

In 2014–15, the independent study ratios were required to be calculated by grade span. However, due to the late timing of the 2014 legislation and late availability of the requisite instructions for making the calculations, LEAs had the option to calculate ratios by grade span or on an overall LEA-wide basis. Beginning fiscal year 2015–16, LEAs will be required to calculate the ratio only on an LEA-wide basis. Please refer to Education Code Section 51745.6 for latest language.

County Offices of Education (COEs) prior year comparative ratio

Assembly Bill 104 also changed the comparative ratio for COEs. COEs now compare their current year independent study ratio to the prior year ratio (was previously a current year ratio) of the high school or unified school district with the largest average daily attendance of pupils in that county.

Course-Based Independent Study (CBIS)

Beginning in 2015–16, the new course-based independent study program is available. CBIS is a separate independent study program with requirements that differ from the traditional independent study program. CBIS attendance is tracked separately, and must have its own independent study ratio calculation. Please refer to Education Code sections 51749.5–51749.6 for information on CBIS.

Below are the links to the independent study ratio instructions and calculation spreadsheets:


Instructions for calculating traditional independent study (IS) LEA-wide ratios (Coming Soon)
Calculation Example Spreadsheet for Traditional IS (XLS) (Coming Soon)
Calculation Spreadsheet for Traditional IS (XLS) (Coming Soon)

Instructions for calculating course-based independent study (CBIS) LEA-wide ratios (Coming Soon)
Calculation Example Spreadsheet for CBIS (XLS) (Coming Soon)
Calculation Spreadsheet for CBIS (XLS) (Coming Soon)


Instructions for Calculating LEA-wide ratios.
Instructions for Calculating Grade Span Ratios
Calculation Example Spreadsheet (XLS)
Calculation Spreadsheet (XLS)

Questions: PASE/CADR | | 916-324-4541 
Last Reviewed: Monday, December 7, 2015

Share this Page

Recently Posted in Educational Options

No items posted in the last 60 days.