First – congrats to your kid on the psat scores. IIRC – psats feed the national merit scholarships… which is money for college. Cha-ching.
(That’s the way it was 30 years ago, anyway.)
As far as free range… I have 2 kids. One would (does) do just fine free range. The other, er… not so much. His instincts for finding trouble, annoying authority figures, bullying…. As Yoda would say: “the force is strong in this one, it is.” If I let him act on every impulse he’d be in juvi.
Each kid is different. Some are self motivated, others not. Each kid has their own level of aptitude, also.
My kids are both pretty bright… but VERY different from each other. Not sure about the free range thing for the younger one.