If you were going to after-school, I would put the MAP score aside and assess topic by topic to see where you're really at. There are various free assessments floating around online but what worked well for us was to simply purchase a textbook and work through it in a modified manner. We went with Singapore Math based on a recommendation and I think especially for checking coverage it works well given its lack of filler. Then you just walk through the chapters/problems and stop if there seems to be a gap i.e. "I don't know how to do this." or do a enough problems to satisfy yourself per section and just skip forward if they look good.