<p>how did you take 30AL before 30A? in any case, because you’ve already taken 30AL, you won’t be able to switch since then you’d be taking classes that overlap… anyway, i did take the 30 series here and it wasn’t as bad as people are making it out to be. just go to class, do the homework (even though it won’t be collected) and study. it wasn’t THAT difficult. most of it is memorization and applying the same concepts over and over in similar instances…</p>