This. I took Calc 1 twice. First time was during the day in a big auditorium style classroom. The prof had a pompous attitude, like he didn't even want to be th

This. I took Calc 1 twice. First time was during the day in a big auditorium style classroom. The prof had a pompous attitude, like he didn't even want to be there. I dropped the class mid-term. I re-took it in the evening. Smaller class size, mostly "non-traditional" students. Prof was awesome. Frequently stopped the lesson to re-explain things and made sure everyone was understanding, stayed after class to help students. Because of that class I actually "got" calculus.