The Internet enables sharing of content between educators, which can reduce the time and effort needed to create custom teaching materials and improve the quality of students’ learning experiences. There are, however, significant obstacles to effective educational content sharing and reuse, especially in developing countries. To address this problem, we have taken a user-centric approach to discover and analyze teachers’ needs and to understand the main barriers to web content reuse among K-12 educators in Bosnia and Herzegovina. Based on this analysis, we have developed a novel pattern language for reusing web teaching materials.