Administrators

With nearly three decades of experience in education, Dr. Zimmer has served at the college, high school, middle, and elementary levels, consistently guiding and promoting academic achievement throughout her career. For the past 21 years, she has served as a principal across elementary and middle schools in three different school districts.

Dr. Zimmer was recently named the 2025-2026 South Carolina Middle Level Principal of the Year by the South Carolina Alliance of Black School Educators. Her leadership has been instrumental in a number of groundbreaking initiatives, including the creation of the first School for the Arts in Chester County School District; leading the first and only NAEYC Accredited School in Richland School District One; and, most recently, working alongside the teachers and staff at Stover Middle School to achieve Schools to Watch Initial Designation and Redesignation I, as well as becoming the first AVID School in Kershaw County School District. Dr. Zimmer previously served as Assistant Principal at Sumter High School.

In addition to her work as principal, Dr. Zimmer currently serves on the SCASA Executive Board representing middle school principals for District Five, and on the board of Pathways for Healing, a non-profit organization supporting survivors of sexual assault. She is a past board member of the South Carolina Arts Commission, and maintains active membership in numerous professional organizations, including:

• South Carolina Association of School Administrators (SCASA)

• South Carolina Alliance of Black School Educators (SCABSE)

• National Association of Secondary School Principals (NASSP)

• National Association of Elementary School Principals (NAESP)

• Association for Supervision and Curriculum Development (ASCD)

• National Education Association (NEA)

• South Carolina Association for Middle Level Education (SCAMLE)

A published author, Dr. Zimmer has written several articles for SCASA Palmetto Administrator and the AASA Journal on Education, and has presented at both national and state-level conferences. She also serves as an evaluator for South Carolina Schools to Watch, and continues to share her musical talents as a flautist with the Palmetto Concert Band.

Dr. Zimmer holds a Bachelor of Music in Flute Performance, a Master of Education, a Master of Education Administration, an Education Specialist (Ed.S.) in Education Administration with Superintendent Certification, and a Ph.D. in Education Administration, all from the University of South Carolina.

She is the proud mother of three boys and two fur babies. Dr. Zimmer is honored to serve as principal of Leslie M. Stover Middle School and remains deeply committed to ensuring that every student reaches their fullest potential.

An experienced educator, Jennifer Hoiland has served as a sixth and seventh teacher at Leslie M. Stover since 2008, where she teaches World History and Geography. She has served on the school’s leadership team since 2010, and currently serves as a Positive Behavioral Interventions and Supports (PBIS) Team Lead. 

She earned a bachelor’s degree in education from Sam Houston State University, a master’s degree in instructional accommodations from Francis Marion University, and a master’s degree in education administration from the University of South Carolina.

She is certified in physical education K-12, middle level social studies, and in secondary administration.

Hoiland completed the South Carolina Department of Education Foundations of Leadership course in 2014 and participated in the Kershaw County Developing Administrators Program during the 2022-2023 school year. 

Hoiland, her husband Nathan, and their son reside in Elgin.

McCallum joins the Stover Middle administrative staff after working as a special education teacher for more than 20 years. Most recently McCallum taught special education at Camden High School for seven years, serving as the instructional leader for the special education department since 2019. Prior to this, he worked at Pine Grove, Inc., Camden Middle School and Charleston County School District.

He earned a Bachelor of Science degree in special education from the College of Charleston and a Master of Education degree in school leadership from Columbia College. He has done post graduate work at The Citadel, College of Charleston, Charleston Southern University and Columbia College. He is certified in mild and moderate special education and in secondary administration.

McCallum completed the Kershaw County Developing Administrators Program, and was part of the 2019-2020 Kershaw County Leadership Academy cohort. He was named the 2021-2022 Camden High School Teacher of the Year. 

McCallum is a 1991 Lugoff-Elgin High graduate, and he and his wife, Martie Gail McCallum reside in Lugoff.