Blank cell – This indicates that the school or student group did not have a valid 2011, 2012, and/or 2013 Growth API. Therefore, a 3Year average could not be calculated.
*Assembly Bill (AB) 484 amended California Education Code sections 52052(e)(2)(F) and 52052(e)(4) to allow schools that do not have an API calculated in 2013–14 and 2014–15 to use one of the following criteria to meet legislative and/or programmatic requirements:
 The most recent API calculation;
 An average of the three most recent annual API calculations; or
 Alternative measures that show increases in pupil academic achievement for all groups of pupils schoolwide and among significant groups.
The decision to use one of the above criteria may be made on a program by program basis and is a local decision.
**Means this API is calculated for a small school, defined as having between 11 and 99 valid Standardized Testing and Reporting (STAR) Program test scores included in the API. The API is asterisked if the school was small in either 2012 or 2013. APIs based on small numbers of students are less reliable and, therefore, should be carefully interpreted.
Formula to Calculate Average APIs:
A 3Year Average API Report was produced if the following criteria were met:
 The school had a valid API (i.e., the school received an API report) in each of the last three consecutive years;
 The school had 11 or more valid scores in each of the last three consecutive years. (A valid score is when a student’s assessment results are included in the calculation of the API.); and,
 If the above criteria are met, the 3Year Average API Report will also include any student group(s) that had 11 or more valid scores in each of the last three consecutive years.
NonWeighted Average: The formula to calculate the nonweighted average is:
2011 API + 2012 API + 2013 API
3

Weighted Average: The formula to calculate the weighted average is:
(2011 API x 2011 Valid
Scores) + (2012 API x 2012 Valid Scores) + (2013 API x 2013 Valid Scores)
2011 Valid Scores + 2012 Valid
Scores+ 2013 Valid Scores

Further details about the calculation of the averages and the 3Year Average API
Report can be found in the “Status of the Academic Performance Index and the 3Year Average Information Guide”. This guide can be
accessed by selecting the “3Year Average Guide” button within the “API Links” section above.