It doesn’t help much in a school setting.

Some of my Uni buildings have shutters, but the issue is that during the night all the windows are shut for security. So while the shutters prevent the room from getting as hot during the day, policy keeps it from being able to cool off. So the rooms are just hot

Essentially you would need a person to actively manage the passive cooling. Someone to ensure windows are open through the night. Teachers should be able to handle shutting the windows and shutter by a certain time of day, but in a hospital or uni you’ll need someone to make sure that happens building wide.