Faculty and Staff Biographies


We all have a story.

We are educated. We are curious. We are passionate about our students.

We share adventures, favorite hobbies, and life’s lessons in our classrooms and conversations. We have guided river trips, backpacked through the Philippines, driven an AirStream across the Rockies, and wintered over in Antarctica. We have traveled by train throughout Pakistan, ran marathons, and sharpened negotiation skills on the Chicago Stock Exchange.

We are all different. But no matter our differences, we have one thing in common: making every moment a teachable moment.

Special note: Please be patient with us as we build our faculty and staff biographies page!

Administrative Staff

Bob Carignan: Head of School Bob Carignan has enjoyed a successful and diverse career. He graduated from Brown University with a degree in English and Economics, and pursued a career in the financial world with Cargill. For 15 years, Bob traded financial derivatives for various firms on the Chicago exchange. After moving to Boise, Bob decided to follow his lifelong passion and pursue a career in education. He joined Riverstone in 2002 as and English, History, and Economics teacher. He played a key role in the development of the School’s English curriculum, and gaining authorization with the International Baccalaureate Organization. Additionally, Bob was instrumental in developing Riverstone’s highly acclaimed college counseling program. Bob has a unique ability to understand and mentor Riverstone’s students. Bob has also participated in the National Association of Independent School’s (NAIS) Aspiring Heads Program and was awarded a fellowship to attend the Head of School Program at the Klingenstein Teachers College at Columbia University. He holds a Masters Degree in Education from Boise State University.
Andy Johnson: Middle and High School Director Andy Johnson has been at Riverstone International School since 2007. He taught Middle School English and Humanities as well as Diploma Programme Business before transitioning to administration. He currently serves as the Director of the Middle and High Schools. Andy has a Master’s in International Studies from the University of Washington.  His undergraduate degree is in German from Central Missouri State University.  He is also a graduate of the United States Army’s Command and General Staff College. Before teaching, Andy served as an enlisted, non-commissioned and commissioned officer in the United States Army from 1983-2007.  He is a veteran of the Iraq war and holds the Bronze Star, the Army Commendation Medal with Valor device, the Combat Action Badge, the Defense Meritorious Service Medal and the Army Meritorious Service Medal.  He is also a graduate of the Army’s Ranger School.
Rachel Pusch: Director of Enrollment Management and Admissions Rachel Pusch was born in California and grew up in Jakarta, Indonesia and Karachi, Pakistan. Living in Asia piqued her interest in languages, and she went on to study Asian Studies and Mandarin Chinese at Pomona College, from which she earned her bachelors degree. In addition to teaching English in Taiwan, Rachel’s work experience includes a background in international business and trade, as well as directing the international student admissions for the College of Idaho. Rachel joined Riverstone in 2003 and currently serves as the Director of Enrollment Management and Admissions. Rachel’s interests include travel and gardening, and she has an affinity for masks and stylish shoes.
Zac Wheeler: MYP PE Teacher and Athletic Director Zac moved to Boise after being born and raised in California. He went to Boise State where he got a degree in Kinesiology and a credential to teach P.E. During his time at Boise State, he coached basketball here at Riverstone and with other groups and high schools in the community. After receiving his degree from Boise State, he moved to Pittsburgh, where he completed his Master’s degree in Health and Fitness and was a physical education instructor at the University of Pittsburgh. Zac loves to be active, play sports, and coach basketball! Zac has extensive experience in high school and college athletics and is looking forward to continuing the expanding tradition and rise of Riverstone Athletics. He can’t wait to take his PE classes on field trips out into the community and explore new and exciting activities. Zac is thrilled to be back in Boise at Riverstone and utilize his travels around the country to teach students from all around the world!
Derek Wright: Outdoor Program Coordinator Derek was raised in a military family living in Germany, Turkey, and all over the US, eventually landing in Arizona. Through his early exposure to the outdoors and participation in Scouting, he pursued a degree in Outdoor Leadership and Education from Northern Arizona University in Flagstaff. His experience with NAU’s Outdoor Program cultivated a passion for outdoor education and leading others.  Upon graduating, he had the opportunity to serve military service members and their families through teaching skiing in Garmisch, Germany, and directing the Outdoor Adventure Program at Fort Tuthill, Arizona. Returning to education, he coordinated outdoor programs at a variety of higher education institutions such as NAU, Cal Poly State University, and Boise State University. He is thrilled to be living in Boise with his wife Colette; you can often find them skiing, biking, camping, climbing, or traveling. Derek is excited to be a part of the Riverstone community and share his excitement for outdoor education with all the students, teachers, and parents.
Tanith Brown: Middle and High School Administrative Assistant Tanith grew up in North Idaho and loves the beauty of the Pacific Northwest. She started her college career as an Elementary Education major before changing majors to Art Education and receiving her B.F.A. at Boise State University.  Since completing her student teaching here at Riverstone with art instructors Christine Corbin and Jay Nelson, Tanith has been involved on campus as both a substitute and summer program instructor. She has worked extensively with children and adults with autism and participates in various art- and special needs-based activities throughout the area. Tanith enjoys art making, reading, spending time on the water, and relaxing with her husband, Tom, and their two cats. She is very excited to be an official member of the Riverstone community and is looking forward to the coming school year.

Residential Staff

Laura Geier: Residential Coordinator Laura grew up in Northern Utah and loves living in the Intermountain West. She pursued her passion for music leading her to Rice University for her undergraduate studies. Then pursued further studies receiving a Master’s degrees in Music from both Ohio University and California Institute of the Arts. After graduate studies, Laura lived abroad one year in Plovdiv, Bulgaria under a Fulbright Grant studying Balkan and Romani music. Laura enjoys being outdoors, hiking, camping, traveling and spending time with her husband Gerardo, who is also Riverstone’s Middle School Music teacher, and three year old son, Gabriel. She was drawn to her new position because it is an extraordinary opportunity to connect with students from around the world and be a part of an international community.
Nick Copeland: Residential Coordinator Nick Copeland grew up in Spokane, Washington and fell in love with the mountains at a young age. A study abroad experience in Argentina during high school sparked his interest in other cultures. He went on to learn more about various cultures as a religious studies major at Lewis and Clark College. After graduating from Lewis and Clark, Nick decided to pursue his interest in the outdoors and led wilderness trips at Camp Nebagamon for Boys in the Northwoods of Wisconsin. His experiences in Northern Wisconsin fostered a new passion – working with kids. Over the last few years, Nick has spent time living in Wisconsin and California leading and teaching students in outdoor and wilderness settings. After a short time living in California, Nick became extremely interested in the desert landscape and traded in his skis for a rope and harness. Nick loves spending his free time climbing with his brother Daniel or going on a wilderness trip with his parents. Nick is looking forward to joining Riverstone International School because of the great opportunity it offers to work with and support students from a variety of backgrounds.