The US Navy nuclear power program had 6 months of intense (8-4 pm) classroom instruction, followed by 6 months of on hands shift work prototype training operating a nuclear power plant, which was a lot like a "flipped classroom".
When i was an instructor at prototype, students had to study and receive checkouts on theory, systems and operations, documented by signatures in their "qual card". These checkouts, and watchstanding were done one-on-one.
In several instances, i could tell a student was not understanding the theory, and as the instructor, i needed to help them understand the concepts: I would explain… >>>