Ability to see for purposes of reading printed materials; Ability to hear and understand speech at normal levels in person and/or on the telephone; Ability to communicate so others will be able to clearly understand a normal conversation in person, on the telephone, and addressing groups; Physical agility to push/pull, squat, twist, turn, bend, stoop and to reach above head; Physical mobility sufficient to move about the work environment (classroom, office, district, from school or home site-to-site; Physical strength sufficient to lift 25 pounds. Physical stamina sufficient to sit, stand or walk for prolonged periods of time; Mental acuity to collect and interpret data, evaluate, reason, define problems, establish facts, draw valid conclusions, make valid judgments and decisions.