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Administrative Team

Lamont Shipley

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
Ethel Hosendorf
Assistant Principal

Ethel Hosendorf was appointed as Assistant Principal to Davis Middle School in 2021. Prior to Davis she spent three years as Assistant Principal at John Hanson MS and 10 years at North Point High School - serving as CTE Business Education Teacher and Administrative Intern.  Ethel started her career in Charles County Public Schools as a substitute teacher in 2008. She is a native of Brooklyn, NY and holds a Bachelor's in finance from Lincoln University of PA; and a Master's of Business Administration from the Keller Graduate School of Management NY. At Davis, Ethel creates an environment where all students feel loved. She also has a student-centered philosophy that focuses on the personal growth and development of the whole child (academically, socially and emotionally). Ethel is especially excited about helping her students to discover their purpose and live out their potential and dreams!

Lamont Shipley

Lamont Shipley
Instructional Assistant 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

Brittany Yhap
7th Grade Assistant 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.

  Anthony Mast
Administrative Intern