@Mia***
Umm, first off you have to enroll in a school, get paperwork from them and the Ministry of Education to apply for an Education visa at a thai consulate in another country.
You're only going to get a 90 day single entry ED visa based on studying in a private school, but you don't get stamped in for a year. Every 90 days you're going to go to the immigration office and apply for a new 90 day extension. You do that for the entire year.
Also you have to attend the minimum hours of class time required as well. PLUS you can't work on the ED visa, so if seeking employment is something you're going to do, just come in on a 6 month METV.