Sean Patrick Bowen 


Mr. Sean Patrick Bowen, our Social Studies and Language Arts teacher, is from the suburbs of Detroit, MI. A Michigan State University graduate with degrees in History, Sociology, Social Studies, plus Teacher Certification with a Specialization in Educational Technology and over ten years teaching experience. He has taught TEFL and TOFL Preparatory Courses in Seoul, South Korea. While teaching in Korea, Mr. Bowen traveled to Japan, China, and Thailand. His life, travels and educational experience make him a great conduit for imparting the school’s mission, “to develop and nurture well-adjusted lifelong learners, prepared to meet the challenges and responsibilities of life and to become successful global citizens and leaders in the 21st century.”   



Charles Koopman



Charles is an American who possesses a Master's Degree in History and IB certification along with twenty-two heart-felt years of teaching both in the U.S. and abroad. Charles loves most sports along with good conversation. He is fluent in Portuguese and Spanish and has written a book, a true "labor of love" dedicated to his father. His connection with Angola lies in his beautiful experiences in Northeast Brazil which is heavily influenced by Africa, and he is truly looking forward to this new adventure. He believes education builds productive, young citizens of the world who can articulate their thoughts, offering love and respect for others and themselves.


Samora Rugumamu


Samora Rugumamu, is the high school science teacher at ASA. He is from a small town in North Carolina and has been teaching science and math within the United States and internationally (China, Kuwait, Kazakhstan, Vietnam) since 2009. He graduated from North Carolina State University with a BS in Biological Sciences. He then enrolled in graduate school, where he worked at a cardiovascular disease research lab, while also doing some teaching and TA work.

Over the course of his teaching career, he has had the opportunity to teach a variety of classes: earth science, chemistry, general science, environmental science, combined science, algebra and geometry. He has an M.Ed in curriculum and instruction (with a minor in K-14 science education). He has thoroughly enjoyed his international teaching career so far, as it has opened his eyes to a multitude of new cultures, languages, and people. Outside of work, he enjoys running, playing basketball, swimming, and of course travelling. He hopes to continue on this path as long as he can, and looks forward to contributing to a fun and productive school year.   


Tony Rishchynski



Anthony (Tony) Rishchynski has been involved in international education for over a decade. He began his career as an English as Second Language instructor and worked in a variety of different global settings, from Latin America to the Middle East to Africa. Tony recently re-calibrated his focus to the Social Sciences with a focus on History. For the last few years he was based at the International School in Windhoek, Namibia where he taught IGCSE and IBDP History. Tony holds a B.A in Media Studies and Spanish Language/Literature from Queens University (Canada), a M.A in Political Science from Georgetown University (USA) and a Post Graduate Diploma in Education from the University of Glasgow (United Kingdom). A life-long explorer and traveler, Tony has spent time living and working on each continent (except Antarctica!). He is a firm believer that a fluency with our past can help the next generation navigate the complex terrain of the fragmented 21st century. To this end, he seeks to introduce young people to the world of politics, culture and the past in order to shape an informed, global citizenry ready to face the challenges of the real world. Outside of the classroom, his main interests are traveling to far-flung locations in Africa, improving his Portuguese and reading/watching the classics of 20th century film and literature.



Deborah Tobin


Prior to joining ASA, Deborah Tobin worked as a teacher and a student support specialist in Canada, China, Malaysia and Oman. She also worked as a school principal above the Arctic Circle in the Canadian high arctic. She holds Bachelor degrees in Arts and Education and a Master’s degree in Education as well as the Cambridge University EAL certification. She is a writer, photographer and videographer and enjoys outdoor activities, traveling and encounters with nature.








Hassan Jose

Middle School and High School Math Learning Coach


Jessica Malambu

Middle School Learning Coach - Portuguese Co-Instructor