Not that I am aware of :/ I think you just have to look around where every you are in thailand to find the schools and see if they offer ED visa support.
If you're in Bangkok the two best schools going are
DLS (Duke Language School, 2nd floor Trendy Building Sukhumvit Soi 13)
RTL (Rak Thai Language, 10th floor Mahatun Plaza BTS Ploenchit)
Back when I was learning thai I reviewed 15 or so thai schools in Bangkok here. They are a few years old, but mostly still accurate
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