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Software developers often work on multiple projects and tasks throughout a work day, which may affect their productivity and quality of work. Knowing how working on several projects at a time affects productivity can improve cost and schedule estimations. It also can provide additional insights for better work scheduling and the development process. We want to achieve a better productivity without losing the benefits of work interruptions and multitasking for developers involved in the process. To understand how the development process can be improved, first, we identify work interruptions that mostly have a negative effect on productivity, second, we need to quantitatively evaluate impact of multitasking (task switching, work context switching) and work interruptions on productivity. In this research we study cross-project multitasking among the developers working on multiple projects in an educational setting. We …