Transition. Leaving home to attend public school or college is a big adjustment for parents and children. Homeschoolers who have a solid foundation in reading, writing and arithmetic typically adjust just fine. In fact, homeschooling is great at preparing children for college, as most learning in college occurs independently, outside of a classroom setting.
Taxes. If my husband had written a list about the disadvantages of homeschooling, taxes would have been at the top. Texas homeschoolers are not exempt from school taxes, and unless the laws change there is no way around it. I've encouraged my husband to think of the money we pay for school taxes as a donation to public schools.