When a Nigerian foreign exchange student moves in with a white suburban, American family, cultural differences and close minded town ideals turns the once home, into a house of unrelated individuals

I like this logline a lot. I really like 'turns the once home, into a house of unrelated individuals'. I would try to shorten the first half of your logline, and focus more on these aspects of your script. I feel that 'cultural differences' and 'close minded town ideals' should be given more of an explanation.