0 = Female
1 = Male

SEN classes
0 = Not SEN class
1 = SEN class

1 = School 1
2 = School 2
3 = School 3
4 = School 4
5 = School 5
6 = School 6

Participant's Year Group
0 = Year 7
1 = Year 8

1 = white
2 = black
3 = Asian
4 = Mixed
5 = Chinese
6 = other

AGG1: If someone makes a mistake, I will often tease them about it
1 = strongly disagree
2 = disagree
2.5 = Middle
3 = agree
4 = strongly agree

CDI1: Saddness
0 = No symptom
1 = Mild symptom
2 = Present symptom

Lonely: I am lonely
1 = not at all true
2 = sort of not true
3 = true some of the time
4 = sort of true
5 = really true

Lonely: I feel alone
1 = not at all true
2 = sort of not true
3 = true some of the time
4 = sort of true
5 = Really true

Victim, physical: Being hit
1 = never
2 = once or twice
3 = sometimes
4 = about once a week
5 = several times a week

Do they have a very best friend?
0 = No
1 = Yes