To investigate the influence of parenting style on high school adolescents' adjustment, 272 year three high school students (132 female) were selected using random cluster sampling. They were assigned into 4 groups, based on their answers to the parenting style questionnaire (adopted from Naghashyan, 1979). Authoritative (high in both acceptance and control), Authoritarian (high in control, low in acceptance), permissive (high in acceptance, low in control), and indulgent (low in both acceptance and control) parenting. The high school adolescents' adjustment inventory was completed by participants. The range of alpha Cronbach and test-retest reliability coefficients were from .68 to .85 for both scales.The results showed more. Adjustment for adolescents from authoritative and permissive families, but there was no significant difference between indulgent and authoritarian families. Also, adjustment of adolescents from permissive families was not different from authoritative ones. Girls showed more adjustment than boys. There was no interaction between sex and parenting style.Controls had no significant effect on adolescents' adjustment but the effect of acceptance was significant; that is, the more acceptance, the more adjustment in boys and girls. There was no interaction between sex and variables such as control and acceptance.Findings and their implications for the proper parenting styles and the future research has been discussed.