It's a little before 8 a.m. when Mathias Schergen pushes open the side door at Chicago's Jenner Elementary Academy for the Arts.
He walks down the hall toward the office to sign in. It's the same routine he's had as Jenner's art teacher for nearly a quarter century.
"It's gonna be a good day," a colleague calls out. "It's a good day."
They hug. It seems like a typical Friday. Except it's not.
After 23 years at Jenner Elementary, Schergen is retiring.
"Is this your last day?" asks a first-grader.