The study evaluates changes in motor performance in older school-age boys at a primary school in Lomnice nad Popelkou. The development of motor performance is monitored in boys aged 11-15 years from non-sports classes on the basis of an informal test battery of six motor tests (run for 60 m, run for 1000 m, curl-up, long jump, triple jump from a place, pull-ups) in a period of twenty-two years (school years 1996/1997 – 2018/2019). A total of 1,863 boys of all ages participated in motor testing. The results indicate an unchanged to declining level of motor performance over the recorded time period for most of the tests used in all age groups.