And this is the core (if covert) problem with large class sizes. Not that a teacher can't instruct 30 kids vs. 20 kids - but that 150 kids per semester just lea

And this is the core (if covert) problem with large class sizes. Not that a teacher can't instruct 30 kids vs. 20 kids - but that 150 kids per semester just leaves less time to interact with each student at a meaningful level.