Table 2.

Evaluation of implementation outcomes. Number of positive, neutral, and negative evaluation of teacher and student interviews with exemplary statements.

Aspect of Implementation	Source	n Positive Evaluations	n Neutral Evaluations	n Negative Evaluations	Example Positive Evaluation	Example Neutral Evaluation	Example Negative Evaluation
adherence	teacher interviews	10	2	4	“It was very clear to me (…) and the tool was easy to use.”	“It was difficult to find the right time for the poster exhibition, so I asked students to visit it on their own.”	“I did not use every exercise exactly as instructed as the students were a little too tired for them.”
exposure	teacher interviews	4	0	6	“I implemented many games, especially during the first week and until the holidays.”	Not applicable	“Well, I did not manage to do everything (every exercise), because somehow something different always comes up in school.”
quality of delivery	teacher interviews	25	4	7	“(I liked) that it had different exercises and that the students actually slowly opened up.”	“Well a few (exercises) were questionable, where I needed more space in my class room. And I have a room, where the tables are fixed, so I was limited regarding the exercises from the beginning.”	“I think for the teenagers it was really cool, but for the younger ones it (the poster exhibition) was a bit scary sometimes.”
participant responsive-ness	student interviews	145	44	14	“Yeah, I mean, that kind of project brought the class closer together somehow.”	“Some (exercises) were not bad, but I think they did not do that much for us now.”	“Many classmates did not take it seriously.”