Faculty & Staff

Faculty & Staff

At GTCHS, faculty and staff are more than educators. They’re mentors, innovators, and lifelong learners who bring our mission to life.

All teachers are certified by the state of South Carolina, with more than 80% holding advanced degrees, including master’s and doctoral credentials. On average, GTCHS educators bring 21 years of experience to the classroom, combining deep expertise with a passion for student growth.

Every year, teachers participate in workshops, conferences, and national training programs to refine their craft and stay at the forefront of educational practice. Many are recognized leaders, serving as curriculum designers, presenters, and professional development facilitators across the state and beyond. GTCHS is proud to be home to the 2024 District Teacher of the Year and a recent recipient of the South Carolina STEM Teacher of the Year award.

Collaboration is woven into our culture. Teachers co-design lessons, share strategies, and lean on one another to create a learning environment that is student-centered, dynamic, and future-focused. From guiding service projects to leading college prep seminars, every staff member plays a role in helping students discover their strengths and rise with purpose.

Administration

Rhonda Gregory

Principal

Years at GTCHS: 2021-Present

Degrees:
Anderson University, BA Secondary English Education
Furman University Masters of Arts School Leadership
Furman University Educational Specialist (Ed.S.)
School Leadership ,Southern Wesleyan, Curriculum and Assessment

Areas of Certification:
English, Principal, Superintendent

Email

Drew Ray

Assistant Principal

Years at GTCHS: 2020-Present

Degrees:
MBA from The Citadel and Education Administration, M.Ed. from USC

Areas of Certification:
Secondary Administration, Computer Science, Business and Marketing, Math

Email

Elinor Lister

Assistant Principal

Years at GTCHS: 2024-Present

Degrees:
BA in English from Erskine College
M.Ed. in from Instructional Leadership
M.Ed. in Administration from Lesley University

Areas of Certification:
Middle and High School English, K-12 Administration, National Board

Email

Dot Fetters

Administrative Assistant/Registrar

Years at GTCHS: 2020-Present

Degrees:
BS in Management from Clemson University
MS in Management from Southern Wesleyan University

Email

Sarah Goodnough

Attendance Clerk/Receptionist

Years at GTCHS: 2021-Present

Degrees:
B.S. Business Administration from Milligan University

Email

Noel Rogers

Director of Finance & Business

Years at GTCHS: 2016-Present

Degrees:
BBA in Finance from the University of Georgia

Areas of Certification:
CBA (Certified Bank Auditor)

Email

Ellie McCann

School Nurse

Years at GTCHS: 2022-Present

Degrees: ADN

Areas of Certification:

EmailWebsite


Athletics

Ben Shiley

Director of Athletics

Years at GTCHS: 2001-Present

Degrees:
B.S. in Education - Bowling Green State University
M.S. Athletic Administration - Ohio University

Areas of Certification:
Certified Athletic Administrator (CAA), Read to Succeed

Email Website

Andrew J. Appenheimer

Assistant Director of Athletics

Years at GTCHS: 2022-Present

Degrees:
Bachelors SUNY Cortland, Masters Lamar University
Areas of Certification:
PE K-12, Administration
Areas of Endorsement:
Driver Education

Email Website


Career & Technical Ed.

Doug Adomatis

Teacher

Years at GTCHS: 2014-Present
Degrees:
B.S. Applied Physics, Georgia Institute of Technology
M.A. Teaching, Clemson University
Areas of Certification:
Science, National Board Certified Career and Technical Education

Email Website

Michelle Dedesma

Teacher

Years at GTCHS: 2023-Present
Degrees:
Bachelor in Music Education (BME) from Florida State University
Master in Educational Technology (MET) from American College of Education
Areas of Certification:
Business and Marketing Education, Music Education Choral & Voice, Middle Level Science, Middle Level Mathematics, ESOL, Elementary & Early Childhood.
Areas of Endorsement:
Read to Succeed

Email Website

Tammy Ward

Teacher

Years at GTCHS: 2025-Present
Degrees:
B.B.A in Computer Information Systems | Georgia Southern University
M.A.T. in Business Education | Georgia Southern University
Areas of Certification:
Middle Level Mathematics,Business/Marketing/Computer Technology
Areas of Endorsement:
Read to Succeed

Email Website


College & Career

Karen Rogers

College and Career Coordinator/Testing Coordinator

Years at GTCHS: 2017-Present
Degrees:
B.A. in English - Clemson University
M. Ed. in Secondary Education, English - Converse College
Areas of Certification:
Secondary English, National Board, Media Specialist, Read to Succeed, Career Development Facilitator

Email

Libby Campbell

College Seminar Teacher

Years at GTCHS: 2025-Present
Degrees:
B.S. in Elementary Education; University of Missouri-Columbia

Email Website


Counseling

Brittani Duffy

School Counselor for Last Names A-Ki

Years at GTCHS: 2026-Present
Degrees:
B.A. Secondary English Education, Clemson University
M.Ed. Secondary School Counseling, The Citadel
Areas of Certification:
English, Secondary School Counseling
Areas of Endorsement:

 

Email Website

Tiff Peters

School Counselor for Last Names Ko–Z; Middle College Liason

Years at GTCHS: 2016-Present
Degrees:
B.S. Mathematics Teaching, Clemson
M.Ed. Secondary School Counseling, Clemson
Areas of Certification:
Mathematics, Secondary School Counseling, National Board Certified Teacher in Mathematics
Areas of Endorsement:
Gifted and Talented, AP Calculus AB, Read to Succeed

EmailWebsite

Theresa Dahlstrom

Counseling Clerk

Years at GTCHS: 2022-Present

Email


English

Amelia Watson

Teacher

Years at GTCHS: 2013-Present
Degrees:
BA English - College of Charleston
MAT Secondary English Education - Converse College

Areas of Endorsement:
Read to Succeed

EmailWebsite

Autumn Phillips

Teacher

Years at GTCHS: 2023-Present
Degrees:
B.A. in English from North Greenville University
Areas of Certification:
Secondary English Language Arts, Gifted and Talented Instruction
Areas of Endorsement:
Read to Succeed

EmailWebsite

Christopher Moore

Teacher

Years at GTCHS: 2025-Present
Degrees:
B.S. English Education University of South Florida
M.A. Secondary School Leadership Furman University
Ed.S. Educational Supervision
Areas of Certification:
Secondary English
Areas of Endorsement:
Read to Succeed

EmailWebsite

Geneva Brown

Teacher

Years at GTCHS: 2023-Present
Degrees:
Bachelors of Art in Social Work-South Carolina State University
Masters in Education- -Secondary CounselingCitadel School of Graduate Studies
Ed.S. Educational Supervision
Areas of Certification:
Secondary Counseling
Areas of Endorsement:
Read to Succeed

EmailWebsite

Ken Gillespie

Teacher

Years at GTCHS: 1998-Present
Degrees:
B.A. in English /Clemson University
M.A. in Education/Furman University
Areas of Certification:
Secondary ELA
Areas of Endorsement:
Read to Succeed

EmailWebsite


Fine Arts

Abe Marsh

Teacher

Years at GTCHS: 2011-Present
Degrees:
Bachelors of Music, Furman University
Masters of Music, Converse University
Areas of Certification:
Instrumental Music Education K-12
Areas of Endorsement:
Read to Succeed

EmailWebsite

Brittany Rowe

Teacher

Years at GTCHS: 2022-Present
Degrees:
B.S. in Interdisciplinary Studies, Radford University
Areas of Endorsement:
Gifted and Talented

EmailWebsite

Jena Taylor

Teacher

Years at GTCHS: 2020-Present
Degrees:
B.A. in Theater and Mathematics, Coker College
M.A. Ed in Curriculum and Instruction, Furman University
Areas of Certification:
Mathematics
Areas of Endorsement:
Gifted and Talented, Read 2 Succeed

EmailWebsite


Foreign Language

Amanda Soules

Teacher

Years at GTCHS: 2021-Present
Degrees:
B.A. in Spanish, B.S. in Education from Wester Chester University of Pennsylvania
Masters in Curriculum and Instruction from Concordia University
Areas of Certification:
Spanish K-12 and Elementary Education K-6
Areas of Endorsement:
Technology Endorsement

EmailWebsite

Irena Tervo

Teacher

Years at GTCHS: 2024-Present
Degrees:
B.A. in International Relations / Michigan State University
M.A. in French Language & Culture / Wayne State University
Areas of Certification:
French, Spanish
Areas of Endorsement:
Read to Succeed, Gifted and Talented, Online Teaching

EmailWebsite

Valerie Dix

Teacher

Years at GTCHS: 2004-Present
Degrees:
Clemson University - BA Secondary Ed. with an emphasis in Spanish
Columbia College - M. Ed. Divergent Learning
Clemson University - ESOL certificate
Areas of Certification:
Secondary Education, Spanish, ESOL

EmailWebsite


Math

Angelique Piotrowsky

Teacher

Years at GTCHS: 2025-Present
Degrees:
B.S. in Mathematics with Secondary Certification from Lander University (2008);
Masters in Educational Leadership from WGU (in progress, anticipated graduation date: 2026)
Areas of Certification:
Mathematics (Secondary Certification)
Areas of Endorsement:
Gifted and Talented

EmailWebsite

Charity Pratt

Teacher

Years at GTCHS: 2024-Present
Degrees:
B.S. Secondary Mathematics Education - Bob Jones University
Areas of Certification:
Mathematics
Areas of Endorsement:
Gifted and Talented

EmailWebsite

Eric Johnson

Teacher

Years at GTCHS: 2022-Present
Degrees:
B.S. in Mathematics | Morris College
M.P.A. in Public Administration | Troy State University
Areas of Certification:
Secondary Teacher Certification in Mathematics
Areas of Endorsement:
Gifted and Talented, Read to Succeed

EmailWebsite

Jeremy Heinold

Teacher

Years at GTCHS: 2025-Present
Degrees:
B.S. University of Evansville
Masters in Instructional Technology Coastal Carolina University
Areas of Certification:
Math/Science
Areas of Endorsement:
GT/AP

EmailWebsite

Lisa Hall

Teacher

Years at GTCHS: 2018-Present
Degrees:
B.S. in Elementary Education from Anderson University
Master of Education in Teaching and Learning (concentration in mathematics) from Clemson University
Areas of Certification:
Elementary Education and Middle Level Mathematics
Areas of Endorsement:
Read to Succeed

EmailWebsite


Science

Aaron Merritt

Teacher

Years at GTCHS: 2020-Present
Degrees:
B.A. Psychology from Furman University; M.A.T. Secondary Science from The Citadel
Areas of Certification:
Biology, General Science
Areas of Endorsement:
Advance Placement- Biology & Advance Placement- Chemistry

EmailWebsite

Dr. Joanna Howard

Teacher

Years at GTCHS: 2015-Present
Degrees:
BS, Biology - Furman University
MS, Wildlife Biology with Quantitative Ecology as special focus - Clemson University
PhD, Wildlife Biology with Ecological Modelling as special focus - Clemson University

EmailWebsite

Ed Kaczmarczyk

Teacher

Years at GTCHS: 2005-Present
Degrees:
BS Meteorology UW Madison
BS Mathematics UW Madison
MS Meteorology UW Madison, worked 1.5 years on PhD UW madison - degree not completed
Areas of Certification:
Mathematics and Science

EmailWebsite

Tiffany Kay

Teacher

Years at GTCHS: 2023-Present
Degrees:
BA Chemistry Education, Coker University
M.Ed. Education, Southern Wesleyan University
Non degree 20 Graduate Hours in Chemistry, Ohio University
Non Degree 30 Graduate Hours in Technology, Various
Areas of Certification:
Chemistry
Areas of Endorsement:
Online Teaching, Gifted and Talented

EmailWebsite


Social Studies

Christine Cook

Teacher

Years at GTCHS: 2023-Present
Degrees:
BA in History, University of South Carolina, Columbia;
MT in Secondary Social Studies, University of South Carolina, Columbia
Areas of Certification:
Secondary Social Studies
Areas of Endorsement:
Read to Succeed, Gifted and Talented, Advanced Placement US History, Advanced Placement, European History

EmailWebsite

Danny Kilgore-Wilson

Teacher

Years at GTCHS: 2025-Present
Degrees:
B.A., in History Winthrop University '23
M.A.T., Social Studies Concentration Clemson University '24

EmailWebsite

David Rush

Teacher

Years at GTCHS: 2016-Present
Degrees:
B.A. in Philosophy - Clemson
B.A. in Political Science - Clemson
Masters of Teaching-Winthrop University
Areas of Certification:
Social Studies
Areas of Endorsement:
Read to Succeed, Gifted and Talented

 

EmailWebsite

Thomas “Buck” Wall

Teacher

Years at GTCHS: 2022-Present
Degrees:
BA History and Masters of Education from Furman
Areas of Certification:
Social studies
Areas of Endorsement:
Gifted and Talented Certified, AP Certified in US, AP US Test Grader 2007 - 2024, AYP National Board certified 2003,2013, and 2023

EmailWebsite


Special Education

Gwynne Armstrong

Teacher

Years at GTCHS: 2004-Present
Degrees:
BS Special Ed/ College of Charleston
Masters Divergent Learning/ Columbia College
Areas of Certification:
Special Education

EmailWebsite

Rachel Doss

Teacher

Years at GTCHS: 2026-Present
Degrees:
BS Special Ed/ University of Wisconsin-Eau Claire
Masters Educational Administration/ Anderson University
Areas of Certification:
Special Education/ Educational Administration

EmailWebsite


Development

Tyler Barefoot

Director of Development

Years at GTCHS: 2024-Present
Degrees:
B.S. in Environmental Science - University of Alabama
Master in Business Administration - University of Alabama

Email

Tawnia Kibby

School Development Coordinator

Years at GTCHS: 2024-Present
Degrees:
AAS Supply Chain Management - Greenville Technical College

Email


IT

Jonathan Sarasty

IT Director

Years at GTCHS: 2023-Present
Degrees:
Computer Technology Associate in Applied Science - Greenville Technical College
Areas of Certification:
CompTIA A+ Certification

Email

Nick Sinicropi

IT Support Technician

Years at GTCHS: 2026-Present
Degrees:
B. S. in Information Technology - Western Governors University
Areas of Certification:
CompTIA A+ Certification

Email


Facilities

Yon Radford

Facilities Director

Years at GTCHS: 2024-Present
Degrees:
B. A. Secondary Education - Clemson University
M.A. - Sports Administration - USSA
M. ED. Administration and Supervision - Anderson University
Areas of Certification:
Secondary Social Studies
Areas of Endorsement:
Gifted and Talented, Read to Succeed

Email

Angie Williams

Custodian

Years at GTCHS: 2022-Present

Sharon Moore

Custodian

Years at GTCHS: 2014-Present

Collin White

Maintenance

Years at GTCHS: 2012-Present