Dan Pallmann | High School Principal

Dan was born and raised in New York, but made his way to Hawaii and eventually to Japan. In 2003, he moved to Okinawa with his wife. He holds a Master of Arts in Education from Liberty University. After teaching in the classroom for 19 years, he now enjoys the challenge of serving as principal. You might find him enjoying a cup of coffee or strolling on the beach with his family.

Brad Skarin | Middle School Principal

Brad, a Maryland native, has called Okinawa home since 1998, when the Marine Corps brought him to the island. Holding a Master of Arts in Religion and a Doctorate in Education with a focus on Curriculum and Instruction, Brad dedicated 13 years to teaching at OCSI before transitioning to the leadership team. His expertise spans secondary Math, Science, and Bible, and he currently serves as the Middle School Principal.

Beyond his professional pursuits, Brad is a proud parent to two current OCSI students and two alumni. In his leisure time, he embraces the outdoors through activities like biking, running, and paddleboarding. Brad’s commitment to both his faith and education is evident in his love for Jesus and his role at OCSI, where he feels blessed to pursue these passions.

Sarah Turner | Elementary Principal

Sarah was born in Florida, but moved to Japan at 2 months of age. She grew up outside Tokyo until graduating from High School at Christians Academy in Japan. She graduated from Johnson University and received her B.S. in Elementary Education and Bible with an emphasis in ESL. In addition, she holds a Master of Arts in Holistic Education. Sarah has taught 1st grade for 7 years at OCSI. Sarah enjoys traveling, drinking tea, and wearing unique earrings.

Sosro Wibowo Karsosoemo | Business Director

Sosro is from Indonesia. He graduated from Waseda University with a Bachelor of Science in Industrial Systems Engineering. He worked in the IT industry for 14 years, spending the last 8 years managing projects for Symantec. In 2015, he moved to Okinawa with his wife and son and worked full-time as a church leader. Having been blessed with a daughter since then, he enjoys raising his family on this beautiful island and being part of the OCSI team serving God’s work in Okinawa.

Nick McQuillin | Operations Director

Nick is a passionate tech enthusiast with extensive experience in international education and school management. He earned a degree in Intercultural Studies from Providence College, which propelled him to Japan in 2004. Initially, he joined a team that focused on campus ministry and reaching out to university students. After getting married, Nick and his wife spent more than a decade managing a language and culture center. With a strong foundation in intercultural communication and technology, Nick transitioned to the international school industry. When he is not working, Nick enjoys spending quality time with his three children, engaging in outdoor activities, and water sports.