Last year, Bush, chairman of the National Constitution Center in Philadelphia, presented Clinton with the Liberty Medal for her work as secretary of state.
The Dallas conference was a bi-partisan effort. It was jointly sponsored by Bush and former North Carolina Gov. Jim Hunt, a Democrat.
Clinton spoke for more than half an hour, echoing themes she has struck in recent appearances about the need to improve access to good education, including community colleges and vocational programs. She talked about education as a global issue, praising Malala Yousafzai, the Pakistani student who survived an attempt by the Taliban to kill her.
“We’re living in what I like to call the participation age,” Clinton said.