The article covers the problem of project-based learning (PBL) in present-day foreign language classes. The main aim of this research is to identify how PBL method can be implemented in teaching a foreign language (for example, English as a second language) in a modern comprehensive school and to give recommendations on organizing a foreign language class with the help of PBL. The working hypothesis of the study says that PBL method can be a relevant and effective methodological technique allowing educators to improve the quality of school education and motivating young learners to work hard at L2 classes and study a foreign language better. For the effective analysis and estimation of project-based learning in teaching ESL a two-step experiment was conducted. Overall, the results of the study demonstrated the importance of introduction of project-based learning in foreign language classes as an essential component of the teacher's work in the present-day education. They also proved that project-based learning should be a must in every educator's pedagogical "piggy-bank" because PBL is an effective professional instrument which may overcome the latest demands and challenges of the third millennium society.