My high school had a whole push for teachers to try flipped classes. I found them to be really nice, skipping through the video when they're repeating something I already got, or re-watching something if it didn't make sense. Despite this, general sentiment of my school seemed to be that they were terrible. I heard complaints such as not being able to ask questions immediately, or feeling disengaged compared to being taught live.

All and all I wish my college did them, I struggle to sit through lectures.