Thomas Gaffey is the Chief Instructional Technologist at Building 21, a nonprofit organization that is reimagining secondary schooling to meet the needs of all learners. Prior to his current work, Thomas studied computer engineering and was a math teacher for a number of years.

Thomas is nicknamed "Mr. Pedagogy", as he has always stressed to his colleagues the importance of pedagogy coming first and how his organization should be training teachers on not just on technology tools, but good pedagogy and teaching.