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Administrative Team


Robert Griffiths

Mr. Robert L. Griffiths was named principal at Theodore G. Davis Middle School in 2020. Mr. Griffiths began his career with Charles County Public Schools in 2004 as a mathematics teacher. He taught at Westlake High School and Henry E. Lackey High School, before becoming an administrative intern at Westlake. He was named as a vice principal of St. Charles High School when the school opened in 2014, returning to Westlake in the same position in 2017.

Mr. Griffiths is a graduate of Penn State University where he received his Bachelor of Science in Mathematics Education and McDaniel College where he received his Master of Science in Curriculum and Instruction.

As principal, Mr. Griffiths plans to partner with the Davis community to help students advance toward college and career readiness

  Ethel Hosendorf
Vice Principal


Lamont Shipley
Instructional Vice Principal

Mr. Shipley has been an administrator at Theodore G. Davis Middle School since the fall of 2018. Prior to joining the Davis team, Mr. Shipley was a 6th-grade team leader and middle school math teacher in Prince George's County Public Schools. In the early stages of Mr. Shipley's educational career, he was an elementary school teacher and the coordinator of Head Start programs at five DC Public School campuses.

A native of New Jersey, Mr. Shipley was the first in his family to take the traditional path to college after watching his mother, a former high school dropout, attend night school to earn her bachelors degree, masters degree and ultimately her Ph.D. Following his mother's example, Mr. Shipley has earned a bachelor’s degree in Business Administration from the University of Maryland Eastern Shore, a master’s degree in Urban Studies from the University of Maryland, his teaching certification through a joint program with the Center for Inspired Teaching and Trinity University and his Administration Certification from Notre Dame of Maryland University. 

Mr. Shipley's lives by the words of Dr. Benjamin Elijah Mays, "It is must be borne in mind that the tragedy of life does not lie in not reaching your goals. The tragedy lies in having no goals to reach... It is not a disgrace to reach for the stars but it is a disgrace to have no stars to reach for... Not failure, but low aim is the sin." Mr. Shipley motivates students to dream as if their dreams are already a reality and to persist as if their goals and dreams were reserved for them.


Brittany Yhap
7th Grade Vice Principal

Ms. Brittany A. Yhap is a Charles County native who began her teaching career in 2011 at Fred M. Lynn Middle School in Prince William County as a 7th grade ESOL/Language Arts teacher. In 2012, Ms. Yhap transferred to Charles County Public Schools & began her six-year teaching career at John Hanson Middle School as a 6th grade Language Arts Teacher. In 2015, she became the FAME Administrator for the first FAME cohort at John Hanson Middle School. Later in her career, Ms. Yhap chose to transfer to General Smallwood Middle School in 2017 as a 6th grade ELA teacher. Ms. Yhap then served as the 9th grade School Administrator at Thomas Stone High School in 2018 prior to becoming the 6th Grade Vice Principal at Theodore G. Davis Middle School in 2019.

Ms. Yhap earned her Bachelor’s degree in English Arts in 2010, along with her Master’s degree in Secondary Education and Literature from Hampton University in 2011. Most recently, she has completed her Administrator 1 Certification through Towson University and is looking forward to servicing all stakeholders through authentic leadership.


Adam Kennedy
6th Grade Administrator / Administration Intern

Mr. Kennedy hails from the frozen tundra of Michigan and quickly found a home in the sunny confines and smiling faces of Maryland. He began his career at John Hanson Middle School and taught there as an English/Language Arts teacher from 2010-2020. He held the position of ELA department head from 2015-2019 before transitioning to 7th grade team leader for the 2019-2020 school year. During his time in CCPS, Mr. Kennedy presented twice at state conferences in 2013 and 2018. He contributed to the adoption of a formative assessment curriculum in CCPS, first participating in the initial FAME cohort, then working to write success criteria and learning progressions for the 6th grade ELA curriculum. His time at John Hanson culminated in his nomination for the Charles County Public Schools 2019-2020 Teacher of the Year.

Mr. Kennedy graduated from the Grand Valley State University School of Education in 2010. He was awarded his masters in Curriculum Development and School Leadership from Drexel University in 2017 and attained certification in Educational Leadership from McDaniel College in 2020.