Energy. Enthusiasm. Involvement.

That’s what St. John’s teachers bring to school every day. Classes are exciting and engaging. Students are expected to be part of the discussion. They discover that subjects once thought dull have life and interest, and they unlock talents for new disciplines. 


List of 9 members.

  • Photo of Jeffrey Mancabelli

    Jeffrey Mancabelli 

    202-363-2316 x1010
  • Photo of Christopher Themistos

    Christopher Themistos 

    202-363-2316 x1030
  • Photo of Thomas Sipowicz

    Thomas Sipowicz 

    Director of Mission Integration; Morality and Social Justice
    202-363-2316 x1188
  • Photo of Kathleen O'Connor

    Kathleen O'Connor 

    Assistant Principal for Academic Affairs
    202-363-2316 x1004
  • Photo of Dana Watson

    Dana Watson 

    Assistant Principal for Student Life
    202-363-2316 x1005
  • Photo of Colleen Gannon

    Colleen Gannon 

    Dean of Academic Services
    202-363-2316 x1095
  • Jillian Bastow 

    Class Dean for 2025
    202-363-2316 x1151
  • Ian MacInnes 

    Class Dean for 2024; Algebra 2
    202-363-2316 x1109
  • Photo of Jason Smith

    Jason Smith 

    Class Dean for 2026
    202-363-2316 x1051

Faculty and Staff Directory