The purpose of this study is to develop and validate a general academic interest scale for secondary school students. The subjects of this study were 477 middle and 482 high school students. In order to develop a general academic interest scale literature reviews were made. According to the literature reviews general academic interest was divided into three factors: cognitive interest, emotional interest, and valuable interest. An exploratory factor analysis was conducted with 24 preliminary items and revealed a general academic interest scale consisting of 20 items including; 5 cognitive interests, 7 emotional interests, and 8 valuable interest items. With the reference related validity of general academic interest scale achievement goal orientation, academic self-efficacy, and academic achievement were revealed to have higher relation. In a cross-validation test of middle and high school students the two groups were found to have homogeneity in the analysis of configure, metric, and scalar tests. This study has developed and validated a general academic interest scale for middle and high school students. Due to this study, academic interest will be studied more deeply.