The teacher said it looked like the sort of report that was written after midnight, on the last day of Christmas vacation.
8 seconds sound clip from the Happy New Year, Charlie Brown! movie soundboard.
You can hear this line at 00:24:05.845 in the VHS version of the movie.
Quote context
[...]
- Did you finish War and Peace, Charlie Brown?
- I finished at 3:00 this morning.
- How did you like it, Charlie Brown?
- Did you turn in your report?
- Yes.
- What did the teacher say about it? What grade did you get?
- A D-minus. The lowest grade without failing.
- Gee, I'm sorry, Charlie Brown.
- What could I say? I congratulated her on her remarkable insight.
- Did you see what our next assignment is?
- To read Crime and Punishment by Dostoevsky.
- Happy New Year, Charlie Brown.
[...]