Objective: The present study was conducted to test the validity and reliability of the Academic Life Satisfaction Scale (ALSS) on adolescents. Design: Two different samples were recruited for data collection. The first sample consisted of a total of 423 high school students, 272 (64.3%) females and 151 (35.7%) males, with a mean age of 15.97 (SD = 1.16). The second sample also comprised 360 high school students, 225 (62.5%) females, and 135 (37.5%) males, with a mean age of 16.44 (SD = 0.76). The Personal Information Form, the Academic Procrastination Scale, and the ALSS -- Adolescent Version (ALSS-AV) were utilised as data collection tools. Results: Confirmatory Factor Analysis (CFA) confirmed that the adolescent version has good structural validity. The factor analyses revealed that the scale had a two-factor structure and an acceptable fit to the data. The multiple-group CFA results regarding gender revealed that the structure of the scale had measurement invariance on both female and male students. Analyses also revealed that the scale had good convergent, discriminant, and criterion validity. Furthermore, the internal consistency and split-half reliability of the scale were found to be adequate. Conclusion: The ALSS-AV has good evidence of validity and reliability in a sample of adolescents. It can be used to assess academic life satisfaction among this group.