It rather depends where the 'point' is that you've got up to.As a sort of yardstick, ABRSM grade 5 theory is probably as far as you need to go with Classical theory, as harmony, scales, basic chords etc., are covered, plus a lot of stuff that only applies to classical playing - ornaments, writing for transposing instruments, alto clefs and so on won't be too relevant.
Stuff that will be, at this level, is - odd time sigs., writing in certain keys,intervals etc.Then there's always extended chords !At this level, you're probably better going off at a tangent and studying jazz theory, which will have started in the same frame of mind as the Classical anyway.
I'm guessing you're studying this with bass in mind, but whatever instrument, the theory will make far more sense when it becomes practice. Play with other jazzers, read the real and fake books.Get backing tracks: there are loads to Google, and get good at transcribing notes and chords from them.