Actually I meant to say I think Mark's idea has merit.
Use some creativity. Maybe start half the classroom class in September, the other half online. Flip flop them after Christmas break. And so on. That would cut down on the crowding. Maybe alternate the between class mad scramble times. Like the bell goes off, only half change classrooms, then 15 minutes later the other half. Didn't they used to alternate cafeteria times back in the day?
Look for sacred cows that could be butchered for a better process.
How about online classes inside the brick and mortar? Aren't they doing a lot of that anyway?
Oh, hell, I really don't know what I'm talking about.