Flunk

I might flunk the course.

If you flunk this exam, you'll have to repeat the course.

Tom hopes he doesn't flunk out of school.

I didn't flunk.

I'm going to flunk.

I hope I don't flunk tomorrow's test.

Tom hopes that he doesn't flunk out of school.

Donald is going to flunk.

Did you really flunk a grade?

He flunked math, again.