Abstract
This study investigated the volleyball playing ability of 806 junior high school students in relation to various physiological and growth factors. Statistical analysis of the volleyball tests showed them to be objective, reliable, and valid measures of playing ability. Positive correlations were found between volleyball playing ability (of both boys and girls) and the factors: age, height, weight, and strength. There was found to be a decided relationship between pubescent status and volleyball performance for both boys and girls. Pubescents and post-pubescents made higher scores at each age level than did pre-pubescents. A description of the volleyball tests is appended.