High school subjects to be an architect?

High school is more or less unimportant, except that you need to study whatever will get you into college, and if you're planning to be an architect, you might want to load up on optional math and "shop" classes, particularly those that involve drafting. Physics wouldn't hurt.

What you should study in college is, of course, architecture. Exactly what classes that entails is up to the discretion of the college; if you'd like to know what the requirements for the major are, contact the college you're planning to attend and ask.