He says, in my school, prayer is not held. What is our duty?

No, establish the prayer. Praise be to Allah, all the teachers are Islamic studies teachers.

Or any committed teacher in the school can say: Come, let's pray Dhuhr.

That is, at its time. We are in the mosque. In the mosque, we will pray in congregation because some classes might be delayed, especially now that Asr time is coming earlier.

So we pray Dhuhr in the mosque. Talk to some of them. It's not reasonable that an entire school has no upright teacher. That's impossible.

Talk to any upright teacher and say we want to pray Dhuhr in congregation and so on, and they will pray, Allah willing.