What are the IQ levels for Primary O/D's for incoming freshman? Last season I offered a 2nd year JUCO a starting position because his primary O/D is the same as the ones I play with. When he signed his O/D IQ were both B's, and I am guessing a freshman's IQ's will be a little lower. Does anyone know the exact letter grade?

the exact grade varies. You can see by looking at freshmen on any team in your world

Is there a penalty for players with a low IQ?

player performance and team performance improves with better IQs - IQ affects performance. Better IQ is better. Worse IQ is worse. Very bad IQ hurts significantly.

An important comparison to make between your team and your opponent is your depth in terms of IQ - if you have say 9 guys at B+ and above and he has 9 just three such guys, you may want to go uptempo and you may want to target his low IQ defenders. All things being equal - every step is multi factored,.