Pre-Kindergarten Round-Up for Three Rivers Elementary School. Calling all parents of 3 and 4 year old children. TRES will be having a Pre-Kindergarten Round-Up to Pre-Qualify your child(ren) on Wednesdays, April 27 and May 4, 2022 from 4 to 6 pm. This is a pre-qualification event to see if your child will qualify. Check out our new webpage at: https://sites.google.com/trisd... or call TRES at 361.786.3603 for more information.