These Colorado guidelines explain the purpose of vision screening programs in schools and draw a distinction between screening and a screening program. They outline types of screening to be carried out for students at each grade level. Screening procedures are then described in detail, including: history and external observations, distance visual acuity, plus lens, near point of convergence, alternate cover test, stereo/depth perception, and color vision. Sample forms are provided, along with tips for successful implementation of each procedure. Referral criteria and procedures are outlined, steps in the follow-up process are listed, and training requirements for staff administering each procedure are noted. An appendix summarizes the guidelines in chart form, lists equipment needed, and provides various forms. (JDD)