In spanish we convert the ABC (still 3 separated letters in English) in one word... If you say A B C in Spanish would be el abecé.
But I'd go for a different translation... something like El estudiante debe saberlo todo... or... oops... any other suggestion?
"ABCs " means "the basic or elementary things you need to know about something". For example: For studying accountancy you need to know the ABCs of Maths. (I don't know if I'm good at this. Mend me if I'm wrong, please)