If he even cracks a "c"on this project

[keannu]

She seems to be worried about her son's bad grade, but what is "crack"?

g.w

Dylia- If he even cracks a "c"on this project,

I can live with getting a "c" on my parenting.

[Rover_KE]

I'm guessing it means achieves/gets.

Grades are capitalised, so you don't need inverted commas: '. . .getting a C'.

Rover

[keannu]

I'm guessing it means achieves/gets.

Grades are capitalised, so you don't need inverted commas: '. . .getting a C'.

Rover

I couldn't find that definition in the dictionary, is it only specific in American English as an idiom?

[Rover_KE]

I couldn't find that definition in the dictionary, is it only specific in American English as an idiom?

Probably - that's why I had to guess.

It's not idiomatic in BE.

Rover