I'm currently in Taiwan and I know about the TOP test. Unfortunately, I haven't taken it yet. It is supposed to be similar to the HSK, with the big difference being the traditional characters. You can't even take the HSK here, so the TOP is the standard. They regularly promote it at language schools here also.

My mandarin teacher has prepared many people for the test, and has been teaching it for years. Are there any questions I could ask for you?

By the way, I'm also from Milwaukee! It's a small world, I'm really missing Kopps custard over here.