@Ma***
, I don't know where you got that idea :/ You can get an ED visa to study a LOT of things here; any language not your native one that a school is MOE certified to teach, personal combat, muay thai, thai cooking, scuba diving, buddhism, and a few other things too I believe.
There was a Spanish school in Mahatun Plaza that was MOE approved and did ED visas for students, but they moved.. Sorry I don't know where they went :(