Boarding schools with modular scheduling?

That might just be something they’re working through at the moment while teachers adapt. Here at Lawrenceville, we’ve had a similar type of schedule both before and during covid (pre-COVID each class 4x in six days, during covid 3x in six days), and the solution that they came up for was basing homework assignments on class periods rather than nights. So, for example, a 500 level class can only assign 55 minutes of homework after each class period, even if there are three nights between one meeting and the next.