High School Esports Team

I am creating a team for my high school where we will be playing League in a competitive setting! We are thinking of going through HSL (High School Starleague). I have never been with this group so anyone who has played on the HSL please tell me what you think of it! Also how to build a good team with my school and such! I would love to hear your ideas! Any questions you might have about what we'll be playing on or if you wish to scrim us and you're team we would love to! Thanks guys! -Parkmom