1. Why are some boxes in the table or on the spreadsheet empty?
To insure the privacy of students, the California Department of Education does not release test data for groups of students that are 10 or smaller. As a result, there are many subjects and grade levels where we do not have test data even though those students did take the test. Rather than try to include an explanation in each case, we chose for simplicity sake, to simply leave those boxes blank.
Similarly, there are instances where there are schools on the Overall report that do not show values for a subject or a year because all of their grade levels and subjects had 10 or less students who took the test and had valid scores.
Finally, with four years of data, it is possible to see schools that opened or changed grade configurations during the four-years of data. You are probably familiar with these issues in your local area.
2. Why are there some districts where only one school shows data but yet the District Average shows different numbers?
The answer is related to #1. In this case, there are other schools in the district who had students tested in that subject and grade but the size of the group of students was 10 or less. Therefore their individual results were not reported. Since CDE has the student level data, they are able to include those students in the District Average and as a result, the scores for district may not match the scores for the one school that show test scores.
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