At my S23’s school (UC Berkeley), certain classes are designated “Time Conflict Enrollment Allowed,” although this doesn’t seem to be very common. I don’t know what the full policy is, but the ones I’ve seen marked this way have recorded lectures (so you can watch asynchronously), in-person discussion and/or lab sections, and everything is very well organized and available online.
Here’s an example:
- CS 61a class listing: 2025 Fall COMPSCI 61A 001 LEC 001 | UCB Class Search
- CS 61a class web site: https://cs61a.org