RESUMO
INTRODUSTION: There have been limited research studies done in Mongolia on health status of children in relation to density of children in school classrooms.GOAL: This study aims to evaluate learning ability of children in Mongolia and develop recommendations for next intervention measures.MATERIALS AN METHODS: A total of 1440 children were surveyed in a cross sectional study that included 6 classes from 6 secondary schools of UB city, Uvurhangai and Dornod aimags. The test of letter drawing created by of V.Ya.Anfi mova was used to evaluate the pupil’s learning skills. This test was performed at the fi rst and last classes in each day of which was tested at the beginning (I quarter or September) and end (IV quarter or May) of the academic year.For each tests we accounted the mean of drawing letter, mean of mistake for 500 letter and standard deviation.RESULTS: The results of pupil’s letter drawing tests were compared by quarter for fi rst and last classes in each day. Pupil’s learning ability of class 4 was enough while other classes were not enough (P index 1) on the fi rst and last tests.CONCLUSION: Pupil’s learning ability has been changed by the same way of physiological adaptation process of child.Pupil’s learning ability had been decreased in last tests of each day and on Friday which was revealed by letter drawing test.Pupil’s learning ability of classes between 4 to 9 were not enough on the fi rst term while 4th class was good enough on the forth term (P index 1).