Adolescence requires appropriate energy intake to support physical and psychological development, it can be obtained from the consumption of snacks in schools. From the initial survey there were 30% of students who had poor knowledge in SMP Muhammadiyah 10 Surakarta. The purpose of this study was to determine the effect of nutrition education with video media to the students' knowledge in the selection of snack foods at SMP Muhammadiyah 10 Surakarta. This type of research is quasy experiment design with one pretest-posttest group design. Sampling was done by proportionate random sampling technique with total sample of 44 students. Data analysis using Kolmogorof smirnov and Paired Sample T-Test.. Based on data analysis using Paired Sample T-Test test result p = 0.000 so there is significant effect of knowledge after given nutrition education with video media. After given the nutritional education the value of students 'knowledge increased from 75.6 to 87
