Should I take up summer classes? I am a science student (PCM) and want to study commerce.

Dear student, mistakes happen all the time. It is not big blunder. Yes, if you have changed your mind and really want to become an accountant (CA/CS etc), you can take summer classes. I hope you are good in math. After completing M.Sc, I can say accounts and pure math walk parallel to each other. W

If you want to continue with commerce then what is the point in taking up PCM? You can directly pursue whichever stream you want. Continue with commerce instead of taking up summer courses.