Meet Our Administrators
Excellence is never an accident. It is always the result of a commitment to culture, planning, dedication, positive attitude, and focused effort. One of the best things about Logos is its administration and staff. They are here to serve our Logos families. We're grateful that this dedicated bunch of incredible people have chosen to call Logos their work family and to serve the incredible students and families of Logos Public Charter School. Please let us know if we can do anything to help you have an extraordinary education.
All staff can be reached by email
Formatting: first initial, last name @logoscharter.com
Example: [email protected]
Executive Director
Sheryl Zimmerer serves as the Executive Director, Title IX Coordinator, Civil Rights Coordinator, and Section 504 Coordinator for Logos Public Charter School in Medford, Oregon. With an enrollment of more than 1,310 students, Logos is the largest hybrid charter school in the state, dedicated to its mission of providing personalized learning for every student.
Sheryl earned her B.S. in History with a minor in Latin American Studies, followed by a Master’s in Teaching and an administrative license, all through Southern Oregon University. She began her career as a social studies teacher at McLoughlin Middle School before moving into school leadership.
Her service to Logos spans many roles. She spent seven years on the school board, including four years as board chair, where she helped shape policy and governance. She then served as an elementary principal for five years. Since 2017, she has led Logos as Executive Director, guiding the school through continued growth and innovation. Under her leadership, Logos has expanded its facilities with the construction of the main campus building in 2018–2019, a pavilion in 2020, a basketball court and PE structure in 2021, a woodshop in 2022, and the new tutoring center set to open in spring of 2026.
Business Manager
Cassie has been actively employed in a variety of positions at Logos Public Charter School since July of 2012. She began as an Administrative Assistant & Assistant to the Event Coordinator, progressing into HR Manager, 7-12 Event Coordinator and, most recently, Business Manager. In 2014 she completed OSPA’s two-year, five course Human Resources in Education Leadership program (HrELP). Cassie has a Bachelor’s degree in Business Management with a certificate in Management Human Resources and a certificate in Conflict Resolution.
Elementary Principal
Brianne Fanelli is currently the Elementary principal at Logos Public Charter School, which serves a wide population of homebased learners in the Southern Oregon region. Prior to entering this position, she served as an ES when Logos first opened as a school in 2010. She graduated with her Bachelors in Psychology from Simpson University and worked in a psychiatric setting for 7 years. She went on to complete her Master of Arts in Teaching (MAT) from Southern Oregon University. She then joined a team of teachers for two years (sponsored through U of O) in which the initiative was to enhance core reading programs to ensure proper scaffolding and retention as they developed up to 4th grade. She taught 3 years in a traditional elementary classroom setting before finding her place here at Logos.
Middle/High School Principal & Athletic Director
Amber Warren joined Logos Public Charter School in 2013, and has served as a Middle and High School Education Specialist, Math Department Chair, and Advanced Math Lead Instructor. She is currently serving as the Middle/High School Principal & Athletic Director. Amber attended Southern Oregon University and earned her BS in Mathematics in 2001, Master of Arts in Teaching in 2002, and her Administrative License in 2009. She has taught in the Rogue Valley for 20 years; 18 of those years have been dedicated to middle school students. Amber enjoys being active with her three kids, husband, and her large extended family.
Registrar/Office & Facilities Manager
Shawna has been employed with Logos Public Charter School since February 2012. Starting as a State Testing Assistant, then progressing to State Testing Coordinator & Receptionist, then onto Registrar, Shawna currently serves as Registrar/Office & Facilities Manager. While wearing many hats, Shawna is dedicated to serving the staff and families at Logos. Outside of Logos, Shawna enjoys going on adventures with her husband and three kids.
Elementary Assistant Principal
Lorna began teaching at Logos in 2017 as an Elementary ES serving kindergarten through fifth grade students. In 2023, she moved into the position of Literacy Support Specialist to support students, families, and teachers in bolstering early literacy skills. Lorna earned her BS in elementary education with a middle school endorsement from Taylor University and recently earned her Master's in Educational Leadership from Grand Canyon University.