This volume contains selected papers submitted to the 18th Annual International Conference of the Bulgarian Comparative Education Society (BCES) held virtually in June 2020. The 18th BCES Conference theme is "Educational Reforms Worldwide." This year's book includes 38 papers written by 73 authors from 19 countries. The volume starts with an introductory piece on school reforms in Bulgaria from the 9th to the 21st century written by the keynote speakers Nikolay Popov and Marina Pironkova. The authors present the cornerstones of school reforms during the First, Second, and Third Bulgarian State. They also discuss various cultural, social and political factors determining school development in Bulgaria. The other 37 papers are divided into six parts: (1) Comparative and International Education & History of Education; (2) International Organizations and Education; (3) School Education: Policies, Innovations, Practices & Entrepreneurship; (4) Higher Education & Teacher Education and Training; (5) Law and Education; and (6) Research Education & Research Practice. [Individual papers are indexed in ERIC.]