PLATTEVILLE, Wis. — Platteville High School senior Tate Zuehlke sat at a table at the district’s middle school, watching as fifth-grader Kashyn Popp used a coding program to create virtual monsters in a video game.

“They have their own sounds, so I just recorded the sounds, and I coded it so you have to press a certain button in order for it to make a sound,” Kashyn said.