This research, which was performed in order to determine the relationship between some activities in the online learning environment and their academic achievements of Physical Education and Sports School students, was designed in a relational scanning model. The research was conducted on the data of 444 students who attended online classes at a physical education and sports school of a state university in the spring term of the 2020-2021 academic year. Data used in the research were collected through "Aid for Learning Management System (ALMS)" and "Student Information System (SIS)" of the relevant university. The duration of watching the courses live and from the archive, the number of downloading the course documents and the duration of watching the course videos uploaded were obtained within the scope of online learning activities via ALMS; and the academic achievement scores of the students for these courses were obtained via SIS. As a result of the research, a positive and significant relationship was found between course attendance, the duration of watching the archived and uploaded course videos, the number of downloading course documents and students' gender and their academic achievement scores while there was no significant relationship between students' grade level and academic achievement scores. According to the significant correlations, it was seen that the duration of live course attendance and watching from the archive significantly predicted the academic achievement scores of the students while the duration of watching the course videos, the number of downloading the course documents and gender did not significantly predict the academic achievement scores of the students.