If in person classes aren’t a must, you might want to check out some of the online resources.  Thaipod101 and there are some old pimsleur audio files that you can find pretty easy to download for free.

I’ve had classes before and it can kind of be hit or miss when it comes to the school. If you can get a visa out of the school that is a big plus, although i think they cracked down on getting easy visas some years back.