First lady Jill Biden and Education Secretary Miguel Cardona visit a robotics lab during a tour at Fort LeBoeuf Middle School in Waterford, Pa., Wednesday, March 3, 2021. (Mandel Ngan/Pool via AP)

First lady Jill Biden holds a Christa McAuliffe commemorative coin she received as she speaks at Christa McAuliffe School in Concord, N.H., Wednesday, March 17, 2021, to pay tribute to the New Hampshire woman chosen 35 years ago to be America's "Teacher in Space."(AP Photo/Susan Walsh, Pool)

Education Secretary Miguel Cardona speaks during a press briefing at the White House, Wednesday, March 17, 2021, in Washington. (AP Photo/Andrew Harnik)

Education Secretary Miguel Cardona speaks during a press briefing at the White House, Wednesday, March 17, 2021, in Washington. (AP Photo/Andrew Harnik)

First lady Jill Biden speaks with students virtually during a visit to the Christa McAuliffe School in Concord, N.H., Wednesday, March 17, 2021. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden tours the Christa McAuliffe School with principal Kris Gallo in Concord, N.H., Wednesday, March 17, 2021. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden speaks as she visits the Christa McAuliffe School in Concord, N.H., Wednesday, March 17, 2021, to pay tribute to the New Hampshire woman chosen 35 years ago to be America's "Teacher in Space" and to emphasize that the $1.9 trillion COVID-19 relief plan signed into law by President Joe Biden last week will provide funding for the reopening of schools. (AP Photo/Susan Walsh, Pool)