Shortcut to assessing "competitiveness" of various competitive full tuition or better scholarships?

Received good news today with DS ACT result. 34 composite, 34 English and Reading, 33 Math and Science. Since he is a sophomore, he will still take again as a junior, but this takes some pressure off. I am guessing that from here, improving test scores won’t improve his shot as much as distinctive and interesting leadership and ECs.