Well…maybe. Students may understand the concepts, but you also need to factor in their long term memory.
Rehearsal refers to the repetition of material, and elaborative rehearsal involves deep thinking about the material presented and associating it with information that already exists in long-term memory.
Because memory is improved with meaningful repetition, revisit the material you have taught throughout the year to help your students make connections to prior learning. This works as learning and memory occur best when various cognitive processes are repeated and overlapped. Remember, even if students have mastered a concept revisit it at a later date for optimal learning.