Table 1 Secondary outcome measures

 Academic Ability

Wide Range Achievement Test (WRAT 4) – a psychometrically sound direct measure of reading and mathematical computation [63].

_

C

 Academic Competence

Academic Competence (Social Skills Improvement System (SSIS)) - 7-item scale assessing the overall academic performance, motivation, reading and mathematical ability of the student in comparison other students in the classroom [64].

_

T

 ADHD Symptoms

ADHD Rating Scale IV - 18-item validated scale measuring the core symptoms of ADHD [58].

P, T

P, T

 Problem Behaviours

Strengths and Difficulties Questionnaire (SDQ) – 25-item validated measure of behaviouraland emotional problems for childrenaged 4 to 16 years. There are 5 subscales; conduct problems, hyperactivity/inattention, emotional problems, peer problems, and prosocial behavior); a total problems score is derived from the first 4 subscales [65].

P, T

P, C, T

  SEF Problems

SDQ Subscales – 5-item emotional and peer problems subscales [65].

P, T

P, C, T

  Depression

Short Version Moods and Feelings Questionnaire (SMFQ) – 13-item subscale assessing depression symptoms in children and youth [66].

_

C

  Bullying

Gatehouse Bullying Scale – 12-item scale measuring covert and overt victimisation [67].

_

C

 Student Attitudes

Attitudes to school life – Motivation (5-items), Connectedness (5-items) and Commitment to school (5-items) scales, from the Victorian Attitudes to School Survey 2012, DEECD) [68].

-

C

 School Attendance

School attendance – days absent over the preceding 3 months

_

P, C, T