There's No Time for Love, Charlie Brown1973

Linus:
What's wrong, Charlie Brown?

Charlie Brown:
I just got terrible news. The teacher says we're going on a field trip to an art museum; and I have to get an A on my report or I'll fail the whole course. Why do we have to have all this pressure about grades, Linus?

Linus:
Well, I think that the purpose of going to school is to get good grades so then you can go on to high school; and the purpose is to study hard so you can get good grades so you can go to college; and the purpose of going to college is so you can get good grades so you can go on to graduate school; and the purpose of that is to work hard and get good grades so we can get a job and be successful so that we can get married and have kids so we can send them to grammar school to get good grades so they can go to high school to get good grades so they can go to college and work hard...

Charlie Brown:
Good grief!