Why take the ACT if already took the SAT

Thank you everyone! He didn’t do much better on the second SAT, he only increased his English score from 670 to 680, so now he has a total of 1430. But he refuses to try again or take the ACT. I guess that solves the dilemma. He sat down with the SAT tutor and me and bascially fired her himself. Told her he’s done with standardized testing and he isn’t willing to study any more, he has better things to do (some extracuricullars he’s obsessed with).