ABSTRACT Cerebral palsy (CP) is a disorder of movement and posture resulting from a non-progressive injury to the developing brain. The aim of the study was to determine the functional level of performance in water and enjoyment of children with CP, after participating in aquatic therapy classes. Nine children diagnosed with CP were involved in an eight-month aquatic program based on the Halliwick concept and provided as a part of a special school education program. The outcome measurements were the Water Orientation Test Alyn (WOTA 1) and an original enjoyment questionnaire. The data showed a statistically significant improvement in six out of 13 trials of WOTA 1. The children described aquatic therapy as joyful, easy, and their favourite form of physical activity among those offered by the school. The results suggest that aquatic therapy classes can be effectively used among children with CP to improve body position control and mental adjustment in the water.