According to the pre-defined benchmarks, letter grades were assigned using the following grading scheme:

A+94% - 100% We are succeeding with a large majority of children and adolescents
A87% - 93%
A-80% - 86%
B+74% - 79% We are succeeding with well over half of children and adolescents
B67% - 73%
B-60% - 66%
C+54% - 59% We are succeeding with about half of children and adolescents
C47% - 53%
C-40% - 46%
D+34% - 39% We are succeeding with less than half, but some, children and adolescents
D27% - 33%
D-20% - 26%
F< 20% We are succeeding with very few children and adolescents
INC Incomplete data
Add a “*” to the grade if it is based on mixed data: device-measured and self-reported; and add a “**” to the grade if it is based on device-measured data exclusively