Thais working for the Ministry of Foreign Affairs (Embassies, Consulates) are the the top students, Medalists from the Chula and Ramkhaeng Universities. That is why I can always say - Thai young top guns, efficient , kind, well presented, English well spoken.
I will be going through that process, in Thai, July 4 2025. Married to a Thai national, 23 years, both living in Japan. She got permanent residency 10 years ago, when the whole family got that. No visas, no reporting, no humiliations like with Thai.
That status has to be renewed every 7 years, nothing, no interraction with the goverment in between.
Bangkok Pattana International school is more like 20,000 US$ a year.
My neighbour in Bangkok, an American, with 2 daughters (9 and 11) does "home schooling". He found some package, from America. It is online, no need for him to stand above their shoulders all day long.
Still, he pays about 3,000 US$ a year for both of them to go to Bangkok Pattana International school for events, sports, arts, drama and other non-teaching activities. He works from home.
Hardly anyone knows. A Marriage visa. If something lethal (God forbid sickness but motorbike crash) happens to your wife, you have 72 hours to leave Thailand, your children, and get an another visa from somewhere, hoewer distant.