This research aimed to determine the effect of practicum learning methods on Geographic Information System (GIS) learning outcomes and high school students activities. The subjects of this research were students of class X Senior High School 1 Pare, Kediri Regency, even in the semester 2018/2019 before the Covid-19 pandemic outbreak. The research instrument used essay questions and student activity rubrics. The data are in the form of learning outcomes and student activities. Data collection techniques include a pretest, posttest, and student activity observation. The gain score data were analyzed using parametric inferential statistics with MANOVA. The hypothesis test results showed that the significance value of the practical method on learning outcomes was 0.000, and the practice method to activity was 0.000. The significance value of the two variables is below 0.05. This test shows that the practicum method affects the learning outcomes of GIS and the activity of high school students. Improved learning outcomes from a score of 55.4 to 82.7. Increased activity from 30 inactive categories to 75.8 active categories. This influence is reflected during learning, where practicum provides a deepening that involves many senses, making learning meaningful, collaborative, and student-centered.