The results of long term anthropometric control under the growth and development of Belarus school-children in the age between 7 and 17 y. o. (about 20 thousand persons, examined in 1996-1997 and 2006-2007) are presented. Variation in physical development indices concerns longitudinal sizes of body, which decrease in boys in the age of 9 to 16. Body weight also decreases slightly in the age of 13 to 16 y. o., and the chest circumference decrease in the age of 13 to 17. That indicates slimming. Those processes, however, are not revealed in the school girls. Evident variation in physical development of Belarusian schoolchildren confirms the necessity in the constant monitoring of growth and development processes in the children and teenagers. .
