What Should We Consider When Applying for Guardian Visas and Choosing an International School in Thailand?

Hi everyone,

My wife, two children and I normally live in China, but have been in Thailand as tourists since February as we are currently not allowed to return to China (foreigners are banned). As it seems increasingly unlikely that we'll be able to return anytime soon, we are looking into putting our kids in an international school here and getting ourselves guardian visas. We plan to start contacting schools next week. The visa process looks fairly straightforward from what we've read (it seems it can all be done from within the country...but I could be wrong). However, I was wondering if there's anything we should be asking the school we choose about the visa process (e.g. any potential pitfalls I might not be aware of). The only issue I can really think of right now is about the timing. As you know, we can currently stay here until July 31st. However, the school term for the international schools doesn't start until the beginning of September. Will the authorities approve our visas starting from July 31st? Anything else I should be asking or be aware of? We are UK/US passport holders if that matters at all. Thanks!