Table 1.

Description of the implementation plan to implement the Guidelines for Healthier Canteens ^a.

Implementation Tool	Action and Targets	Target Group	Period
1. Insight into the current situation
1.1. Questionnaire, school	The results of the online questionnaire to assess and provide insight into the characteristics of the school [18,25].	Coordinator of the school	Before the advisory meeting
1.2. Questionnaire, stakeholders	The results of the online questionnaire to assess and provide insight into stakeholders’ characteristics, individual and environmental determinants [18,25].	All involved stakeholders	Before the advisory meeting
1.3. ‘Canteen Scan’	An online tool that provides (I) insight into and (II) directions for improvement of availability and accessibility of food and drink products in canteens [26]. All available products can be entered, the tool will automatically classify product in healthier/less healthy product, according to the Dutch nutritional guidelines. Closed questions assess the accessibility, availability of water, and presence of policy. To create ownership and insight into the changes so far, the school receives information to fill out the Canteen Scan by themselves if they wanted.	Performed by a school canteen advisor of the Netherlands Nutrition Centre and by the school coordinator. Results and feedback provided to all involved stakeholders.	Before the advisory meeting (by the advisor) After three months (by the coordinator)
1.4. Advisory meeting and report	In one advisory meeting per school, all involved stakeholders are advised about how to improve the canteen by a school canteen advisor of the Netherlands Nutrition Centre. Based on the aims of the school and the points of attention, identified with the two questionnaires and the Canteen Scan a concrete action plan will be developed. This action plan is created together to increase ownership and collaboration. After the meeting, a written report based on this meeting is distributed by email.	All involved stakeholders	At the start of implementation
2. Communication materials	A brochure about the Guidelines for Healthier Canteens, an overview of the steps to take, a personalized poster, a banner for the schools’ website. To create motivation and increase and apply knowledge. Content: information, examples of healthier products, how to place products, and healthier canteens.	Coordinator of the school, who is asked to share this with other stakeholders.	At the start and halfway through implementation
3. Online community	A closed Facebook community for stakeholders was established to share their experiences, ask questions and support each other.	All stakeholders	Continuous
4. Digital newsletter	A regular newsletter sent by email, consisting of information and examples regarding the healthy school canteen. To support, remind and motivate stakeholders.	All stakeholders	Once every 6 weeks (4 in total).
5. Students’ fact sheet	A summary of their students’ wishes and needs with regard to a healthier school canteen, to gain insight into the opinions of students and how students want to be involved.	Coordinator of the school, who is asked to share this with other stakeholders.	Once, 2–4 weeks after the start.

^a This table is adapted from the version published in the design paper [13].