The aim of this study was to examine in visual and auditory reaction time of adolescents with respect to their academic achievement level. Five hundred adolescent children from the Turkey, (age=15.24±0.78 years; height=168.80±4.89 cm; weight=65.24±4.30 kg) for two hundred fifty male and (age=15.28±0.74; height=160.40±5.77 cm; weight=55.32±4.13 kg) for two hundred fifty female, participated as volunteer in this research. The audio and visual reaction time assessments were made by Newtest 1/1000 reaction timer. The reaction times of subjects were taken in same conditions. Academic achievement level was considered as grade average of lesson ninth and tenth class. Visual and auditory reaction time in right and left hand was significantly different between academic achievement score that is 50-60 grades, 61-70 grades, 71-80 grades, and 81 = grades. When the visual and auditory reaction time for right and left hang was analyzed with respect to academic achievement of adolescent children, it was found that the visual and auditory reaction time for right and left hang of 81 = grades were better than the visual and auditory reaction time for right and left hang of 50-60, 61-70, and 71-80 grades (p < 0.05). Visual and auditory reaction time in right and left hand was significantly different between female and male (P < 0.05). In conclusion, it is considered that male adolescents children' reaction time is better than female children. We can connect the motor skills could be developed than in female for adolescents. Also, when academic achievement increased reaction time could be decreased for adolescent children.