Mercer Island Girls Basketball To help all players reach their greatest potential in basketball and in life. About Us High School Program Varsity, JV and C-Team - Click here for details! Learn More Select Program Competitive league comprised of players from 5th - 8th grades. Learn More How Can you Help? Players and Parents can help in many ways, scorekeeping, personal or corporate sponsorships - please click below and our board will get back to you with options! Email Us Jr Hoopsters Registration Now Open! Register for Jr Hoopsters! Sign Up for Princeton Review and Support MIGB!! Sign Up Today!