Flipping the classroom—in which students independently consume online lessons or lectures and then spend their time in the classroom focused on what we used to call homework—crashed on the scene eight years ago. But if Bob Harris, president of Edudexterity and currently working as the head of human resources for Pittsburgh’s school district, is to be believed, it isn’t enough.

It’s time to flip the high school day, he says, and he has plans for how to do it.