If it’s safe to go no masks then it should be no masks everywhere. If they are still needed on public transport, shops etc then they are most certainly needed in school where contact is prolonged and many staff not vaccinated.
That's how I see it too. There is no logic to say masks in classrooms are no longer required but then still need to be worn in corridors and travelling to and from school. The classroom, where you have 30 plus people in a small room with limited ventilation for a hours, is the perfect environment for the transmission of an airborne infection.
The government cannot pick and choose, either masks are required or they are not.