This study is designed to find out the effect of communication between parents and adolescents, and their goal orientation on academic self-efficacy, especially among second-year high school students based on all their family and social environments. For such purposes, a variety of data regarding background variables, communication between parents and adolescents, goal orientation, and academic self-efficacy were collected in Seoul and Goyang-si, Gyunggi-do. The major results of this study are as follows: First, the female high-school students showed a higher efficiency than the male ones when it comes to the communication between parents and adolescents. For the goal orientation, the girl students marked higher levels than the male counterparts; speaking of self-regulated efficiency, the former illustrated a much higher level than the latter as well. Second, academic self-efficacy is greatly influenced by goal orientation. The higher mastery and performance-approach goals are, the higher academic self-efficacy is. It has turned out that mastery goals have significant relationship with task difficulty performance, one of the sub-scales of academic self-efficacy. In addition, performance-approach goals proved to be deeply connected with self-regulated efficiency, but performance-avoidance goals were negative predictors of task difficulty performance and self-regulated efficiency. In turn, academic confidence, one of the sub-scales of academic self-efficacy, is believed to be under the influence of mastery goals and communication between fathers and adolescents.