This paper concerns project-based learning. The aim of the study is to compare the results of group and individual projects of undergraduate students studying Information systems. The research is based on statistical inference and hypotheses tests. A hypothesis test is presented regarding a difference between means of two dependent samples for quantitative indicators that have a normal distribution. The result analysis is based on 3-years experiments with student projects. For all experiments, the null hypothesis is rejected, and in both methods of assessment (group and individual projects), different results are obtained. For the majority of the groups involved in the experiments, the marks of the group project are higher than the average marks of the individual project but there are also exceptions. The results show that students who performed better on the individual project often received lower grades on the group project. Also, students with low individual grades received higher scores on the group assessment. As a conclusion, we can recommend applying both methods – group and individual projects for students’ assessment, paying attention at their advantages and disadvantages.