I'm sorry to hear that your son is being bounced around and that his education is being neglected. You certainly have a basis for filing a modification action based on a material change in your son's circumstance (being removed from school). While it is not ideal to have a live-in fiancee, I think that your situation can be explained by your fiancee's school situation. Furthermore, it sounds like your ex-wife's living and working situation and your son's home-schooling situation is much more...