Save a life; Give Blood! Attention all students and staff, Reavis High School will be hosting a Blood Drive on Thursday, April 7th from 7:30 a.m. until 2:00 p.m., IN THE MAIN GYM. You must be 17 or older (16 with parental permission), at least 110 lb., in good health, and have a photo ID. Students will be receiving further information in their PE, Health or Drivers Ed classes.