Complex sentence: Melanie also states that if they move to New York, Beau will not be able to go to school, because in New York, black children are allowed to attend class, and they could not permit Beau to attend class with black children.
Split into simpler sentences: Melanie also states that if they move to New York, Beau will not be able to go to school. This is because in New York black children are allowed to attend class, and they could not permit Beau to attend class with black children.