The paper discusses the impact of English for Specific Academic Purposes teaching methodology on developing in-house materials for the course of English for Social Sciences taught at the Moscow School of Social and Economic Sciences. The paper gives examples of the materials and provides results of their evaluation. The case study demonstrates efficiency of the approach to in-house materials development based on collaboration with faculty, teachers of English for Specific Academic Purposes in other disciplines, and students. The approach involves analysis of the materials designed at different stages of the educational process. Research results are assessed through the survey conducted among the students and interviews conducted with facult...