Table 1.

Focus group and interview guide prompts eliciting food waste-related responses

Participant group	Main question or prompt	Sub-questions (probes)
Teachers	1.Tell us about students’ consumption of the breakfast foods provided to them 2.Some children may choose to not eat all of the breakfast provided to them. Talk about children saving food or trading with others in your classroom	1.What foods do your students tend to usually eat? Why do you think this is? What foods most often end up in the trash? Why do you think this is? Think about the overall classroom. Describe how much food is generally eaten and how much is thrown away 2.What types of food items are saved for later? What do they usually do with those food items? If they eat their saved food items later, when do they usually eat them?
Cafeteria managers	1.What other changes have you noticed at the school since BIC began? 2.Please describe your experience implementing the BIC programme 3.Describe the ways serving BIC differs from serving it in the cafeteria 4.In the course of daily operation of BIC, what is the most challenging aspect of running the programme?	1.(Meal quality, budget, food waste) 2.What was the biggest barrier or challenge you faced in implementing the programme? 3.What do you feel has changed the most? (Staffing, time to prep, clean-up) 4.Are these challenges the same as those you experienced when breakfast was served in the cafeteria? If not, what’s different?
Principals	1.Please describe your overall experience implementing BIC at your school 2.What other changes have you noticed at the school since BIC began?	1.What barriers or challenges have you encountered? Are these challenges the same as those you experienced when breakfast was served in the cafeteria? If not, what’s different? 2.(Overall attitude of students/staff, scheduling, food waste)
Parents	1.Now think about what typically happens once your child gets to school 2.What are reasons that children might eat or drink something before school and also eat BIC? 3.What do you like least about the BIC programme? 4.What changes, if any, would you suggest/recommend to improve the BIC programme as a whole?	1.To the best of your knowledge, what does your child eat or drink during BIC? 2.(Hungry upon waking, doesn’t care for BIC food, etc.)
Students	1.When you get to school, do you feel hungry? How hungry do you feel? 2.Do you eat or drink anything during BIC? 3.How do you feel after eating BIC? 4.What do you do with BIC foods that you don’t finish?	1.(Very hungry, not hungry, sort of hungry) 2.If so, what? 3.Do you still feel hungry? Do you feel full? Or do you feel just right? 4.Do you save food for later? Which foods do you like to save? Do you trade it or give it to other students? Do you throw it away? Do you take it home?

BIC, Breakfast in the Classroom.