Science education essentially involves students in a systematic scientific investigation. SPS can be developed in sciencebased learning so that students can use it as a basic skill to master science. 100 students of class VIII of Junior High school in the first year were the samples used in this research. Purposive sampling was used to determine the sample in this research. The SPS test kit (SPSTI) is used to determine the SPS profile of junior high school students on the substance pressure material. Indicators in the SPSTI consist of 8 types. The instruments in this research have been declared valid and reliable by experts consisting of 3 experts. The implementation of this research describes the SPS profile of junior high school students, especially in the matter of substance pressure, in general, is still at a very low level. The results of this research can be evidence for future research of SPS subjects for substance pressure materials in junior.high.school.students' that need to be improved.