The article describes the opinion of teachers of physical culture of the cities of Orenburg and Aktobe on the factors that determine the level of physical fitness and physical development of schoolchildren. Relatively reduced quantitative values of their teachers of Aktobe are shown. Among the factors determining the level of physical fitness and physical development of schoolchildren, teachers identified the material base, lack of organization of special medical groups, inconsistency of physical development with the passport age, undue development of independent work programs, homework to improve schoolchildren's physical fitness, low motivation and indifference of parents. The lag of Aktobe schoolchildren from their peers from Orenburg in the development of speed, speed-strength qualities, body length, vital index, arterial pressure was revealed. Ways of improving the physical fitness of schoolchildren are presented, namely, recommendations on the development of independent work programs, homework assignments, work with parents, a set of exercises for the development of lagging physical qualities, respiratory muscles. The contribution of the article to world science are: data on the physical development and physical fitness of schoolchildren of Orenburg and Aktobe compared with similar data from the 90s of the last century; information about the opinion of teachers of physical culture on the factors that determine the level of physical fitness and physical development of schoolchildren; recommendations to teachers of physical culture to optimize the physical training of schoolchildren.