Table 1 Description of the key steps of the MASS intervention

1

The school contacts the student actively in case of medical absence and asks about the context of the sickness report and condition of the student.

2

The school organizes a meeting with the student (and parents if student is <18 years old) in case of extensive medical absenteeism (criteria predefined by each individual school, apart from the MASS criteria).

3

The school refers the student to a YHC professional if considered to be needed.

4

A YHC consultation between student and YHC professional is organized

5

The school is responsible for monitoring the medical absenteeism and school-related implementation of the reintegration plan, if created.