Can't say whether more or less is better, but I got a D grade in my Advanced Bio class in high school, then I retook that semester but did regular Biology. Got

Can't say whether more or less is better, but I got a D grade in my Advanced Bio class in high school, then I retook that semester but did regular Biology. Got an A (maybe B+) and I remember almost everything from the regular class. Depth has its merits but it's not reasonable to expect the participant to retain all that knowledge. Let them come back for more once those few things they retained tickle their fancy!