Anonymous participant so you were building a life on foundations you knew contravened the visa requirements. You knew the school didn’t have classes and was only “a visa business”. I am not surprised your foundation was taken away.
Something to consider is what will your children do once they are no longer attending school? I ask because I have heard first hand of non-Thai families that have faced the reality that once their children were no longer dependent on them the child could not get a visa to continue to live in Thailand