Tyrone joined CAJ in 2019 as a physical education and health teacher, later stepping into the role of High School Principal in 2023. While born in Cleveland, Ohio, Tyrone was raised in Rockford, Illinois, where he served 18 years teaching physical education and six years serving as a dean/assistant principal. Beyond education, he also served as a bi-vocational pastor for over 18 years.

Tyrone earned a Bachelor of Science in Physical Education from Upper Iowa University and a Master of Arts in Theological Studies from Liberty University. With a passion for all things sports, he has dedicated many years to coaching wrestling and American football. Tyrone and his wife, Akiko, are the parents of three boys: Psalm Nobuyuki, Ecclesias Yuki, and Timon Takuyuki. In 2023, Renee accepted the role of Middle School Principal, having served in the Middle School division at CAJ since 2015. During her time, she taught sixth grade Bible and math, eighth grade algebra, and also served in various roles including Student Council Advisor and Head Teacher.

Renee’s journey to Japan began in 2000, when her family served in the US Air Force. After seven years, she and her husband, Mark, discerned a calling from God to return one day. That day came in 2015 when they returned to Japan, and she began teaching at CAJ.

Renee received her Bachelor of Science in Multidisciplinary Studies from Tennessee Tech and currently is pursuing her Master’s in Education Administration and Supervision from Liberty University. Outside of work, Renee enjoys working out, researching her latest burning questions, and going to bed early. She and her husband have six children, one of whom graduated from CAJ in 2019, and two who are still students. Additionally, they have two beautiful granddaughters, who are the reason they make the long flight back to the US a lot more often than they used to. John Van Hofwegen joined CAJ as our Elementary School Principal in 2025. Originally, from California, John began his teaching career as a special ed teacher at a public elementary school in Norfolk, Virginia. He eventually moved to a classroom teaching role while working at Morrison Academy, an international Christian school in Taiwan. He has a Bachelor of Arts degree in English from Calvin University (formerly Calvin College) and a Master of Education degree in Special Education from Regent University.

He joined CAJ with is wife Ting, a professional video editor and videographer, and their son Owen. As a family they enjoy traveling, serving in Christian ministry, exploring new cities, hiking, and going to the beach.