Project-based learning is often seen as a viable alternative to traditional teacher-led teaching. However, little is known about the benefits of using project-based learning to develop cognitive achievement. Therefore, the aim of the current research is to reveal the impact of project-based learning on the development of cognitive achievement among students of the College of Education at Najran University. The research was conducted on a sample of students from the College of Education at Najran University, where they were randomly divided into two equal groups (experimental and control). The research tool consisted of an achievement test in the course of applications in educational technologies. The experimental results showed that there were statistically significant differences between the experimental and control groups in cognitive achievement in favor of the experimental group.