Eating from the students' feast inside the classroom to celebrate the teacher's return

Question:
Honorable Shaykh, may Allah grant you success. A questioner says: I am a primary school teacher. I was absent from school for a period due to a health condition. After returning, I was surprised to find that the students in the classroom had prepared a feast for me inside the classroom to celebrate my return. I ate from it to please them. Is my action permissible?

Answer:
No, this is lawful and permissible. However, if they had asked the school principal for permission to do this, and if it had been a general event for the teachers to celebrate your return, that would have been good. Yes. But holding it in the classroom and making the classroom a place for eating, this contradicts the regulations. Yes.