Table 1 Content and response options of the different items included in the school environmental questionnaire

Active commuting to school

Promotion of active school commuting:

- Active school commuting is promoted by your school.

5-point scale^a

Facilities for active school commuting:

- There are sufficient bicycle racks on school for the students.

5-point scale^a

- There are cycle lanes and footpaths in the school neighborhood.

5-point scale^a

- The roads in the school neighborhood are well lit.

5-point scale^a

Safety from traffic:

- There is a lot of traffic in the school neighborhood

5-point scale^a

- There are dangerous crossings in the school neighborhood

5-point scale^a

Safety from theft:

- The bicycle racks on school are safe

5-point scale^a

Sports and physical activity after school:

Physical activity after school hours:

- Does the school organize sports and physical activity after school (before or after school hours or on Wednesday afternoon)?

Binary^b

Use of facilities:

- Are the students allowed to use school facilities (e.g. sports hall, polyvalent spaces, covered play areas, fields of grass, outdoor sports fields) after school hours?

Binary^b

Use of equipment:

- Are the students allowed to use school sports equipment (e.g. small sports and play material, loan desk for material, music installation, lockers, lines, goals en nets) after school hours?

Binary^b

Promotion of after school activities:

- The school promotes sports and physical activity after school.

5-point scale^a

Information about activities after school:

- The school provides information about the sports and physical activity possibilities in the village/city/town

5-point scale^a

Cooperation with local partners:

- Organizations, sports clubs and other local initiatives can use the school facilities after school hours.

5-point scale^a

- The school cooperates with community partners e.g. there is cooperation with local sports clubs.

5-point scale^a

Sports and physical activity during lunch break

Physical activity during lunch break:

- Does the school organize after sports and physical activity during lunch break?

Binary^b

Promotion of physical activity during lunch break:

- The school stimulates the students to use the school sports facilities and equipment during the school hours.

5-point scale^a

- The school stimulates the teachers to participate in the sports and physical activities during lunch break and recess.

5-point scale^a

- During recess the teachers stimulate the students to be active (e.g. by motivating the students, by participating)

5-point scale^a

- During recess the teachers participate in the sports and physical activities.

5-point scale^a

Active schoolyards or playgrounds

Available of facilities

- Which school facilities (e.g. sports hall, polyvalent spaces, covered play areas, fields of grass, outdoor sports fields) can the students use during recess and lunch break?

continuous

Available of equipment

- Which sports equipment (e.g. small sports and play material, loan desk for material, music installation, lockers, lines, goals en nets) can the after school hours?

continuous

Health education policy

Subjective norm:

- How important is sport and physical activity for the school?

10-point scale

Involvement of students:

- Are pupils involved in decision making about sport and physical activity?

5-point scale^a

Training for teachers:

- The school supports teachers to have training on sports and physical activity

5-point scale^a