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Welcome New US Faculty and Staff

We are pleased to introduce the talented faculty joining CDS Upper School.

Sara Rubinstein, Upper School Division Head and Assistant Head of School is pleased to introduce the faculty and staff joining CDS Upper School in the upcoming 2020-2021 school year. "I am thrilled to welcome this talented cohort of teachers to the CDS community. Although they might specialize in different subjects, what they share is a commitment to excellence and a student-centered approach to education that make them a perfect fit for CDS.” Please join us in welcoming them to the Patriot Nation!

Matthew Bryant

Matthew Bryant, US Science Teacher
Matthew Bryant holds his M.S. in Chemistry from Vanderbilt University and his B.S. in Chemistry from the University of Central Florida. He joins the CDS science department after having served as professor, lead teacher, and curriculum chair of the chemistry department of Lonestar College. He has twice received the Lonestar Faculty Technology Innovation Grant as well as the  Vanderbilt Institute of Chemical, Biology Chemical Biology Interface Training Grant, the Vanderbilt University Mitchum Warren Fellowship, American Chemical Society Minority Scholarship, and was named Ronald E. McNair Scholar.  Matthew also brings experience in remote education, assessment protocols, research, and innovation.  A major goal of his will be to bring chemical awareness and relevancy to the classroom.  Matthew is an avid golfer and enjoys fishing. We look forward to welcoming him to Tampa and to CDS to teach Chemistry this fall.


Natalie Contreras

Natalie Contreras, US Humanities Teacher
Natalie Contreras joins the humanities faculty after seven years at Canterbury School in Fort Myers, where she taught AP Human Geography, 9th grade World History, and Middle School Humanities. She has also served as their Model United Nations Coordinator, Middle School Director of Activities, Middle School Dean of Students, and Middle School Technology Coordinator. Prior to Canterbury, Natalie taught at Greensboro Day School in NC, Colegia Maya in Guatemala, and Escuela Americana in El Salvador. She holds her M.Ed in Educational Leadership from Framingham University as well as her B.S. from Loyola University, Chicago. We are happy to welcome her to CDS next fall when she will take on our 9th grade world history course.


Mindy Gilbert 8th Grade Language & Literature

Mindy Gilbert, US Language and Literature Teacher
Mindy Gilbert joined CDS in the Middle School two years ago and will continue to be a part of the Language and Literature team as she moves to our Upper School. Prior to CDS, Mindy taught at Lutz Preparatory School in Tampa, Florida, Veritas College Preparatory in Memphis, Tennessee, and Sunset Middle School in Nashville, Tennessee.  Mindy comes to the high school with 10 years of teaching experience.  In her career, she has also served as a Middle School Lead Teacher,  Teacher Coach and Mentor, and served on a School Leadership Team.  Mindy is now pursuing her Masters in Educational Leadership and holds a B.A. from Belmont University located in Nashville, TN.  Mindy is excited to join the high school team in the fall where she will teach our 9th grade Language and Literature Course.


Kelvin Jones

Kelvin Jones, US PE Teacher
We are excited to welcome CDS Varsity Boys’ Soccer Coach Kelvin Jones to the US PE department. Kelvin has coached all levels of youth soccer, both boys and girls, for 30 years.  He taught 2nd Grade in Hillsborough County for seven years and served as an adjunct professor at the University of Tampa in the Health Sciences program. Kelvin earned his B.A. from the University of South Florida, where he earned a soccer scholarship from his country of birth, South Africa. He looks forward to continuing to coach our Boys’ team next year as he teaches 9th grade PE.

Kelvin is married to Heather, who is a teacher in the Hillsborough County Schools system. Kelvin and Heather have three daughters, Michaela (23), Taylor (22) and Felicia (17).


Marshall McDuffie

Marshall McDuffie, Strength and Conditioning Support Coach
CDS is excited to welcome Marshall McDuffie to the PE department in a new role as a full-time strength and conditioning teacher and coach. Marshall has served as strength & conditioning coach at Seffner Christian since 2015 while operating M2 Sports Performance, the business he founded in 2012. Marshall has trained and mentored over 100 athletes who have gone onto collegiate athletics as well as 7 ESPN Top 100 athletes. Marshall also served as the AVID coordinator at Armwood High School where he managed a team of 15 faculty in helping at-risk and first generation aspiring college students to complete their academic programs and apply for university admissions. While there he taught their AVID college preparation course. In 2009, Marshall was a player for the Tampa Bay Buccaneers and subsequently worked for the NFL as a site manager. He holds his Ed.S. in Education Leadership from Nova University, his M.S. in Recreation and Sports Management, and B.S. in Business Administration, both from Florida International University. We are thrilled to welcome Marshall to the CDS team to manage our weight room programming, teach strength and conditioning classes, serve as an assistant coach for our varsity football team, support our athlete scholars, and act as strength and conditioning support coach for all CDS teams and athletes.


Gabriel Oduro-Boamah

Gabriel Oduro-Boamah, US Mathematics Teacher
Gabriel Oduro-Boamah earned his B.Ed. in Mathematics from Valley View University in Ghana before completing his M.S. in Teaching and Curriculum with an emphasis in Mathematics Education from Syracuse University. While in Syracuse, he served as a TA for the mathematics department, teaching statistics and probability and problem solving in math, as well as working in the Math Clinic. In Ghana, he taught algebra, calculus I and II, probability and statistics, and differential equations at the secondary and college level. He received the Meritorious Award as well as a Citation of Honor as an Outstanding Leader for his work as Vice President of the Education Students’ Association at Valley View University.


Graham Winseman, US Mathematics Teacher
Graham Winseman earned his B.S. in Mathematics from the University of Vermont, where he interned at South Burlington High School. He has taught everything from pre-algebra to AP calculus, with some statistics thrown in for good measure. He joins CDS after teaching at Bayshore Christian High School. We are excited to welcome him to our math department, teaching MYP 9 and 10 next year.