You can study here.

He failed his exams through not studying enough.

Bart needs to slap himself to keep his attention span on track and be serious about studying, which is noticed by the family looking through the window at how much Bart strives.

I went from desk dwelling computer nerd to the kind of guy who bikes to work for fun.

Mrs. Krabappel, stunned at this obscure historical reference, realizes that Bart does make an honest effort after all.