Here's a link to some of his stats from the past year (9 for 37 from 3). He also went 10 for 40 from 3 during the U18 Championships. Obviously he has better competition than a typical high school student - not sure what to make of him at this point. But I'm not a fan of average/marginal shooters, unless they have a huge skillset (ala Collinsworth).
Game Logs for Agasiy Tonoyan