Colorado Laser School Entrance Requirements. RCLEI does not discriminate based on race, sex, religion, ethnic origin, or disability. Prospective students must be at least 18 years old and hold a high school diploma or equivalency diploma to be accepted for enrollment. If applicants are beyond the age of compulsory school attendance in Colorado and do not possess a diploma or equivalency diploma, they may complete an ability to benefit test. RCLEI does not administer the test but will provide information on availability when requested.