TAHSM Officers

Officers for TAHSM

_______________________________________________________________________________________________________

2025-2026   ... MATHFEST - Boston, MA

• Chair

• Ashley Tharp, North Carolina School for Science and Mathematics, Durham, NC

• ashley.tharp@ncssm.edu

• Past Chair

• Bil Shillito, Oglethorpe University, Brookhaven, GA

• bshillito@oglethorpe.edu 

• Chair Elect

• Ted Alper

• Stanford Online High School, Redwood CIty, CA

• tmalper@stanford.edu

• Program  Coordinator

• Robert Sachs, George Mason University (retired) , Fairfax, VA

• rsachs@gmu.edu

• Secretary-Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD (retired)

• davidstephens17@gmail.com

_____________________________________________________________________________________________________

2024-2025 ... MATHFEST – Sacramento, CA

• Chair 

• Bil Shillito, Oglethorpe University, Brookhaven, GA

• bshillito@oglethorpe.edu 

• Past Chair

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Chair-Elect

• OPEN

• Secretary/Treasurer

• OPEN

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD (retired)

• davidstephens17@gmail.com

____________________________________________________________________________________________________

2020-2021 ... MATHFEST – Sacramento, CA

• Chair 

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Past Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Secretary/Treasurer

• Ted Theodosopoulos, The Nueva School, San Rafael, CA

• ttheodosopoulos@nuevaschool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

___________________________________________________________________________________________________________

2019-2020 ... MATHFEST – Philadelphia, PA CANCELLED

• Chair

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Past Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Secretary/Treasurer

• Ted Theodosopoulos, The Nueva School, San Rafael, CA

• ttheodosopoulos@nuevaschool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_____________________________________________________________________________________

2018-2019 ... MATHFEST – Cincinnati, OH

• Chair 

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Past Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Secretary/Treasurer

• Ted Theodosopoulos, The Nueva School, San Rafael, CA

• ttheodosopoulos@nuevaschool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

__________________________________________________________________________________________________

2017-2018 ... MATHFEST – Denver, CO

• Chair 

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Past Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Secretary/Treasurer

• Ted Theodosopoulos, The Nueva School, San Rafael, CA

• ttheodosopoulos@nuevaschool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_______________________________________________________________________________________________

2016 – 2017 ... MATHFEST – Chicago, IL

• Chair

• Chuck Garner, Rockdale Magnet School for Science and Technology, Conyers, GA

• cgarner@rockdale.k12.ga.us

• Past Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Secretary/Treasurer

• Ted Theodosopoulos, The Nueva School, San Rafael, CA

• ttheodosopoulos@nuevaschool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_________________________________________________________________________________________

2015 - 2016 ... MATHFEST - Columbus, OH

• Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Past Chair

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC

• teague@ncssm.edu

• Chair Elect

• (vacant)

• Secretary/Treasurer

• Stephen Davis, Davidson College, Davidson, NC

• stdavis@davidson.edu

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_______________________________________________________________________________________________

2014 - 2015 ... MATHFEST - Washington, DC

• Chair

• Robert Sachs, George Mason University, Fairfax, VA

• rsachs@gmu.edu

• Past Chair 

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC

• teague@ncssm.edu

• Secretary/Treasurer

• Stephen Davis, Davidson College, Davidson, NC

• stdavis@davidson.edu

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_________________________________________________________________________________________

2013-2014 ... MATHFEST - Portland, OR

• Chair 

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC

• teague@ncssm.edu

• Past Chair

• Mark Howell, Gonzaga High School, Washington, DC

• mhowell@gonzaga.org 

• Chair Elect

• Robert Sachs, George Mason University, Fairfax, VA

• Secretary/Treasurer

• Stephen Davis, Davidson College, Davidson, NC

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_______________________________________________________________________________________________

2012-2013 ... MATHFEST - Hartford, CT

• Chair 

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC

• teague@ncssm.edu

• Past Chair

• Mark Howell, Gonzaga High School, Washington, DC

• mhowell@gonzaga.org 

• Secretary/Treasurer

• Stephen Davis, Davidson College, Davidson, NC

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

__________________________________________________________________________________________________

2011-2012 ... MATHFEST - Madison, WI

• Chair 

• Mark Howell, Gonzaga High School, Washington, DC

• mhowell@gonzaga.org 

• Past Chair

• Caren Diefenderfer, Hollins University, Roanoke, VA

• cdiefenderfer@hollins.edu

• Secretary/Treasurer

• Stephen Davis, Davidson College, Davidson, NC

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

______________________________________________________________________________________________

2010-2011 ... MATHFEST - Lexington, KY

• Chair

• Caren Diefenderfer, Hollins University, Roanoke, VA

• cdiefenderfer@hollins.edu

• Chair Elect

• Mark Howell, Gonzaga High School, Washington, DC

• mhowell@gonzaga.org 

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

_______________________________________________________________________________________________

2009-2010 ... MATHFEST - Pittsburgh, PA

• Chair

• Caren Diefenderfer, Hollins University, Roanoke, VA

• cdiefenderfer@hollins.edu

• Past Chair

• Dan Lotesto, Milwaukee Schools, Milwaukee, WI

• dlotesto@gmail.com

• Chair Elect

• Mark Howell, Gonzaga High School, Washington, DC

• mhowell@gonzaga.org 

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

______________________________________________________________________________________________ 

2008-2009 ... MATHFEST - Portland, OR

• Chair

• Dan Lotesto, Milwaukee Schools, Milwaukee, WI

• dlotesto@gmail.com

• Past Chair

• David Bressoud, Macalester College, St. Paul, MN 

• bressoud@macalester.edu

• Chair Elect

• Caren Diefenderfer, Hollins University, Roanoke, VA 

• cdiefenderfer@hollins.edu

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• Maria Hernandez, The North Carolina School of Science and Mathematics, Durham, NC

• hernandez@ncssm.edu

___________________________________________________________________________________________________

2007-2008 ... MATHFEST - Milwaukee, WI

• Chair

• David Bressoud, Macalester College, St. Paul, MN 

• bressoud@macalester.edu

• Past Chair

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC

• teague@ncssm.edu

• Chair Elect

• Dan Lotesto, Milwaukee Schools, Milwaukee, WI 

• dlotesto@gmail.com

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• Maria Hernandez, The North Carolina School of Science and Mathematics, Durham, NC.

• hernandez@ncssm.edu

___________________________________________________________________________________________________ 

2006-2007 ... MATHFEST - Knoxville, TN

• Chair

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC.

• teague@ncssm.edu

• Past Chair

• Ben Klein, Davidson College, Davidson, NC

• beklein@davidson.edu

• Chair Elect

• David Bressoud, Macalester College, St. Paul, MN

• bressoud@macalester.edu

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• Jon Choate, Groton School, Groton, MA

________________________________________________________________________________________________

2005-2006 ... MATHFEST - Albuquerque, NM

• Chair

• Ben Klein, Davidson College, Davidson, NC

• beklein@davidson.edu

• Past Chair

• vacant

• Chair Elect

• Dan Teague, The North Carolina School of Science and Mathematics, Durham, NC.

• teague@ncssm.edu

• Secretary/Treasurer

• David Stephens, Bryn Mawr School, Baltimore, MD

• stephensd@BrynMawrSchool.org

• Newsletter/Webpage Editor

• Jon Choate, Groton School, Groton, MA