The purpose of the present study was to investigate the effect of Gagne’s Learning Hierarchy on the cognitive and metacognitive skills of junior high school female students in Kerman. The research method was quasi-experimental with a pre-test/post-test and a control group. The statistical population of the research included all the junior high school female students of Kerman (N=1125) in the academic year of 2022-2023. From among these students, two classes of 20 students were randomly selected as the experimental and control groups. The Gagne’s Learning Hierarchy package was implemented in the experimental group and both groups responded to Rastegar Metacognitive Strategies Questionnaire (2006) and Karami Cognitive Strategies Questionnaire (2005) in the pre-test and post-test stages. The obtained data were analyzed using univariate covariance with SPSS 20 software. The findings of the research showed that there was a significant difference between the cognitive and metacognitive skills of the experimental and the control groups and the cognitive and metacognitive skills of the experimental group improved compared to those of the control group. These results showed that learning English can improve students' recognition of concepts, processing, learning, and self-control.
