At Year 9, we appended National Center for Education Statistics (NCES) common core data for 3520 children in 2743 public and private schools. See the documentation for more information. 

Note: These data aren't appropriate for multilevel modeling due to the lack of sufficient clustering within schools. The following table shows the number of children in the sample per school.

Number of children from sample per school

Number of schools
1 2217
2 359
3 102
4 31
5 18
6 11
7 2
8 3

 

School Characteristics