Dr. Tim Healey


Principal, Dr. Tim Healey

Dr. Healey is in his 34th year as an educator in Prince William County, including 19 years as a high school principal (both at Colgan and Osbourn Park). He has also been an English teacher, an assistant principal, and served for five years as the Associate Superintendent for Student Learning and Accountability on the Superintendent's Staff.

Dr. Healey was named the Virginia Student Council Association's (VSCA) Administrator of the Year in 2021 and is the Immediate Past President for the Virginia Association of Secondary School Principals (VASSP). Additionally, he is on the James Madison University College of Education's Executive Advisory Council. He has been an adjunct professor at the University of Mary Washington and currently is teaching at Longwood University.

Dr. Healey has co-authored two books on the ninth-grade transition and written articles for Principal Leadership, The Education Digest, and Our Children magazines. Dr. Healey has been a presenter for the National Association of Secondary School Principals and the National School Boards Association.

Dr. Healey earned his doctorate degree in Educational Leadership and Policy Studies from Virginia Tech, his masters degree in Educational Administration from Virginia Tech, and a bachelors degree in English and secondary education from James Madison University.

Dr. Healey lives in Prince William County with his wife (who is a teacher in PWCS), and together they have three adult children all of whom graduated from Prince William County Public Schools

Melissa McClellan

Assistant Principal

Asst. Principal, Melissa McClellan

Mrs. McClellan is in 28th year in education. She started her career as an educator in Prince William County in 1995 as a special education teacher at Woodbridge High School and several other schools in the county. She was then a member of the opening faculty of Forest Park High School. Mrs. McClellan served as a department chair for Special Education when Freedom High School opened its doors.

She also served as a Teacher on Administrative Assignment at Freedom. From there, Mrs. McClellan became an Assistant Principal at Lee-Davis High School in Hanover County and then at Mountain View High School in Stafford County. Mrs. McClellan earned her bachelor's degree at Kutztown University of Pennsylvania, her master's degree from George Mason University, and her certification in educational leadership and administration from Virginia Commonwealth University.

Mrs. McClellan loves being part of the Colgan community!

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Department of Supervision:

English, Library, Gifted, English Learners

Student Services

Student Last Names: A - Co

11th-Grade - Class of 2024, Prom, Yearbook, & Newspaper

Octavia McDonald

Assistant Principal

Asst. Principal, Octavia McDonald

It is indeed Octavia McDonald’s pleasure to join Colgan High School, and she eagerly anticipates what will unfold this year. This year, Mrs. McDonald is supervising science,  FACS, and Gifted Education.

Mrs. McDonald begins her 24th year in education and her second year as an assistant principal. Before joining the administrative team, she worked at Forest Park High School as an English teacher. She graduated from the University of North Carolina at Greensboro with a Bachelor of Arts degree in English Education and completed a Master of Arts degree in English literature at George Mason University; later, she earned a license in Educational Leadership at GMU.

Mrs. McDonald believes that education is so very dynamic, and just when you think you have obtained your last and final gradation, you will see a new one forming. Mrs. McDonald eagerly anticipates each school year, and she is especially thrilled to welcome students back into the building, and she believes it is going to be a great year!

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Department of Supervision:

Science, World Languages, FACS

Student Services

Student Last Names: Cr - He

Attendance, Homecoming, SCA, National Honor Society, PAC

Dr. David Parrish

Assistant Principal

Asst. Principal, David Parrish

David W. Parrish is in his 19th year in Prince William County. Prior to becoming Assistant Principal at Colgan in 2016, he spent 15 years as a member of the Independent Hill/PACE East Program, serving as an educator, Teacher on Administrative Assignment, and Assistant Principal.

Dr. Parrish earned his undergraduate degree at Longwood University, graduate degrees in Special Education and Educational Leadership from George Mason University, and doctoral degree in Educational Leadership from The College of William and Mary. He currently supervises the Special Education, Health and Physical Education departments, and the Virginia Preschool Initiative (VPI). hEproudly serves as the sponsor of The FIN Friends.

Dr. Parrish resides in Prince William County with his wife and children and is honored to be a member of the Colgan High School community.

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Department of Supervision:

Special Education, Health & PE, VPI Preschool

Student Services

Student Last Names: Hi - Me

Special Education, FinFriends, PTSO, 10th Grade - Class of 2025

Chad Cavender

Assistant Principal

Asst. Principal, Chad Cavender

Mr. Cavender is excited to begin his 16th year in education at Colgan High School where he will be supervising Social Studies, Business, and Career and Technical Education. Mr. Cavender also serves students with the alpha last name Mi - Sc.

Mr. Cavender spent his first 5 years teaching English in Charles County, Maryland where he met his wife who is also a teacher. After getting married in 2012, Mr. Cavender moved to Prince William County and taught English at Patriot High School. After completing his MA in Educational Leadership and Supervision at The George Washington University, Mr. Cavender left teaching in 2016 to become an Instructional Coach with PWCS.

In 2017, Mr. Cavender became the Administrative Intern at Stonewall Jackson High School (now Unity Reed High School) and in 2019 he was promoted to Assistant Principal. Mr. Cavender is the proud father of Graeme, a 2nd grader in Fauquier county.

In his free time, Mr. Cavender enjoys disc golfing and spending time exploring the historical side of Virginia with his family. He is a loyal Detroit sports fan and proud supporter of Michigan football and basketball.

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Department of Supervision:

Social Studies, Business, CTE, Leadership

Student Services

Student Last Names: Mi - Sc

9th Grade - Class of 2026

Karyn Riddle

Assistant Principal

Asst. Principal, Karyn Riddle

Karyn Riddle is in 23rd year in education. She is a native of Prince William County and attended Bennett Elementary, Marsteller Middle, and Osbourn Park High School. Mrs. Riddle has spent her entire career as an educator in Prince William County.

During her time here she has been a high school math teacher, teacher on administrative assignment, and assistant principal at Osbourn Park High School. She spent eight years in central office in both the Office of Professional Learning as the Leadership Development Coordinator and the Office of Student Management and Alternative Programs, where she served as the Supervisor of Student Management. In 2018, Mrs. Riddle came to Colgan High School as an assistant principal.

Mrs. Riddle earned a Bachelor's of Science degree in Mathematics from Longwood University, and Master's in Educational Leadership from George Mason University. In her spare time, she likes to spend time with her husband, daughter, and two dogs.

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Department of Supervision:

Math, CFPA, Performing Arts, Fine Arts

Student Services

Student Last Names: Se - Z

12th Grade - Class of 2023, Graduation

Claire Handville

Director of Counseling

Director of Counseling, Claire Handville

Mrs. Claire Handville began her school counseling career at Gar-Field Senior High School, where she worked as a part of the counseling team that achieved the prestigious American School Counseling Association’s Recognized National Model Program Award in 2016. Mrs. Handville was then part of the inaugural staff at Charles J. Colgan, Sr. High School as a school counselor, before becoming Director of School Counseling in 2018.

Mrs. Handville studied at the University of Florida (Go Gators!), where she earned a B.S. in Psychology, a B.A. in Sociology, and a minor in Family, Youth, and Community Sciences. Additionally, she earned a M.A. in School Counseling from the University of South Florida, an M.Ed. in Educational Leadership from George Mason University, and is a Nationally Certified Counselor.

Recently, Mrs. Handville presented at both the Virginia School Counselor Association conference and the Virginia Secondary School Principals Conference on podcasting and SEL. She is certified as a Diversity, Equity, & Inclusion Specialist (through American School Counselor Association), a Healing Centered Engagement Specialist (through Flourish Agenda), and a Digital Educator (with Common Sense Media).

Mrs. Handville is passionate about empowering the social emotional learning of students and supporting the connection between their current learning to their postsecondary goals. She lives in Prince William County with her husband and two children, and loves watching Gator football and reading.

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Department of Supervision:


Student Services

Course Advising, Student Schedules, Virtual Virginia

Social & Emotional Learning, College & Career, Student Internship

Nathan Staples

Director of Student Activities

Director of Student Activities, Nathan Staples

Nathaniel Staples is a Prince William County native and is in his 13th year as an educator. Mr. Staples is a proud graduate of Potomac Senior High School. After high school, he went on to earn a Bachelor’s Degree from Norfolk State University in Communications and Master’s Degrees from the University of Phoenix in Secondary Education and Educational Leadership. Mr. Staples has coached football, baseball, and track, as well as serving as a sponsor/advisor to multiple clubs and groups.

He started his journey at Colgan as a Teacher on Special Assignment, then as an Administrative Intern and is excited to now be in the position of Director of Student Activities!

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Department of Supervision:

Athletics, Building Rental

Student Services

Student Athletics, Concussion Training

Student Clubs and Honor Societies

Angie Yeh

Coordinator of CFPA

Director of Student Activities, Nathan Staples

Mrs. Angie Yeh is in her 18th year in Prince William County. Since 2005, Mrs. Yeh was the general music teacher at Bennett Elementary School and she is honored to be the new Coordinator for the Fine and Performing Arts Program at Colgan High School.

Prior to working in Prince William County, Mrs. Yeh earned her Bachelor’s degree in Music Education at Messiah College, and her Master’s degree in trumpet Performance at The University of North Texas. In 2016, she was awarded the Distinguished Young Alumi Award from Messiah College.

As a trumpeter, Mrs. Yeh has performed and recorded with The North Texas Wind Symphony under the direction of Eugene Migliaro Corporon. She has also performed and recorded with the Messiah College Wind Ensemble, Trumpet Ensemble, and Jazz Ensemble. Her recording as off-stage soloist on Frank Ticheli’s American Elegy has met with critical acclaim. Angela Yeh is a five-time National Semi-Finalist at The National Trumpet Competition. She was also a semi-finalist in the Concerto Competition at the University of North Texas, and was the winner of the Keith Lance Kuhlman Performance Competition at Messiah College.

Currently, Mrs. Yeh resides in Prince William County with her husband and two children.

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Department of Supervision:

CFPA Auditions, CFPA Performances, CFPA Parent Council

Student Services

CFPA Masterclasses, CFPA Student Council

CFPA Field Trips, CFPA Student Support

Brittany Giovannelli

Teacher on Special Assignment

Director of Student Activities, Nathan Staples

Brittney Giovannelli is in her 12th year as an educator and 6th year in Prince William County Public Schools. Mrs. Giovannelli has taught at both the middle and high school levels in the social studies department, primarily focused on government. Earning a B.S. in Communications from the University of Pittsburgh and M.A.T. from California University of Pennsylvania, Mrs. Giovannelli has recently completed her educational leadership endorsement from Longwood University. 

Mrs. Giovannelli is excited to take on the role of TOSA at Colgan High School.

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Department of Supervision:

No Place for Hate

Student Services

Student Last Names: A - K

Senior Internship, Homecoming