Divorce records are public.  Go to the county Clerk's office and read through the Property Settlement; that'll show how much your father is sending to your mother.

Note that **both sides might be telling the truth**.  Depending on where you live, housing expenses can be shockingly high, and teens -- through understandable lack of experience in the world -- usually don't have a good grasp about how expensive stuff really is.

Thus, two houses -- and therefore two mortgages -- might just be eating a lot of that money.  Add on to that any **possible** poor spending habits by either side and **POOF** there goes the money that would have been spent on college.