This study aims to identify the perceptions of female student teachers enrolled in the Primary Classroom Teacher Program (PCTP) at a university in Saudi Arabia. It will focus on Collaborative Online Project-Based Learning (COPBL), its advantages, challenges facing the implementation of this strategy, and provide suggestions and recommendations to overcome these challenges. A mixed-method research design was used to analyze the data. Questionnaires were used to collect quantitative data from fifty-five students, and nine of them were interviewed to collect qualitative data. The interview sample was intentionally chosen based on the diversity of responses in the questionnaires. The results of this study revealed that there is a consensus between the perceptions of the study sample in the questionnaires and interviews. Participants showed positive perceptions about COPBL. Researchers presented some recommendations and suggestions at the end of this study.