Is there any difference between going to school for landscape architecture and regular architecture? Do you learn basically the same things, and still have to take those exams to be a qualified professional?

there is a huge difference and although they may have some classes that are same, you do not learn the same things
which is why you need a proper degree in either landscape architecture or architecture
therefore,choose well according to what interest you the most
to be a qualified professional in any of them, you need a proper education (an b.arch or m.arch),take an examination and experience