Pole vaulters must weigh in the presence of the athletic director or school administrator and head track coach (if head coach is the athletic director another administrator will assume this responsibility) three times per season. Week 36 or prior to the first competition, and no sooner than Week 40 and 46.
National Federation Track and Field Rules Book, Rule 6-5-3 and 6-5-4: the competitors weight shall be at or below the manufacturer's pole rating. A competitor shall not use a variable weight pole, a pole which is improperly marked or a pole rated below his/her weight during warm-up or competition.