The study aimed to evaluate the level of motor development, based on the monitoring of anthropometric indicators: height, weight, and chest circumference by organizing systematic swimming lessons for children in the initial stage of the basic educational level. The benchmarking analysis of the learning results was carried out within one academic year. The subject of the analysis is the influence of primary swimming training on children’s health condition and motor development in the initial stage of the basic educational level. The object of research is the dynamics of anthropometric indicators in the process of swimming training, as well as the tracking of specific indicators measured with objective instruments, their systematization, and analysis. Scientifically based conclusions will allow us to establish the influence of motor training of students on the dynamics of their anthropometric indicators: height, weight, and chest circumference through systematic swimming activities. An analysis of the dynamics through mathematical-statistical processing was applied to derive the interrelationship between the indicators.