Student gender
Student race
Student socioeconomic group
Area of residence
Internet at home
type of school
School name
Type of programme
Student grade
Ability Sets
Pupil's reading score
Pupil's writing score
Pupil's mathematics score
Pupil's science score
Pupil's social studies score
Pupil mean performance
Pupil IQ score
Pupil academic self-concept
Number of friends each pupil has