Advice please - SAT vs. ACT

<p>My son took the SAT and made 1920 (630 reading, 620 writing, 670 math) then took the ACT and made a 33 (36 writing, 34 science and reading, 29 math). Should he retake one or the other? Strange that his math was highest on SAT and lowest on ACT - but if he retakes the ACT to improve the math, should we worry that he won't do as well on the other sections? Do schools superscore the ACT? Any thoughts?</p>