MAP is a test that gets harder or easier depending on how the child answers the questions.

224 reading
99th percentile for 2nd grade
96th percentile for 3rd grade
89th percentile for 4th grade
50th percentile for 10th grade

So the average 10th grader will score the same as your son.

237 math
99th percentile for 3rd grade
96th percentile for 4th grade
51st percentile for 10th grade

GREAT scores! Have you had any IQ or achoevement testing completed?