I know. I just wanted to be precise because Benjamin said, I quote : "As of right now, you can not get a visa or extension of stay based on being a student at a Thai language school." Which is wrong for the extension. I think it's better not to create any confusion in people mind.
Just to keep you updated about my wife new ED visa from Vientiane.
She gave all necessary documents the first day and when she came back the day after she was interrogated by 2 different Thai people based on the fact her demand is not usual. She told me that many people were interrogated that day and some didn't get their visa.
I guess it was her lucky day because she finally got the visa around 16h15.