What are the visa options for foreign children studying in Thailand and their guardians?

for a foreign child in school here the school the'yre enrolled in provides the documentation so they can get an ED visa

AND after that you can apply for a 90 day Non-O and then a year extension based on raising a foreign child attending school by showing 500K baht in a thai bank account in your name only for 30 days before the first yearly extension and then 3 months for every subsequent yearly extension after that