Is this ISEE score good enough to be accepted into Groton School in MA?

I got a scaled score of
Verbal Reasoning-884
Reading Comprehension-895
Quantitative Reasoning-900
Mathematics Achievement-898
My percentile ranks were75,85,91 and 83 with stanines of 6, 7, 8 and 7

I don’t know anything about the ISEE, but it sounds like you’re at a point when you should stop worrying about test scores and focus on the rest of your app.