It's almost like we've learned nothing from Covid. Human interaction is crucial for children's developmental well-being. Also, a robot has about as much instructional control over a kid as a computer screen would, and we all know how that turned out when elementary-aged kids came back from at-home learning. Robots can't teach social skills, and without any sort of rapport with students, good luck getting kids to listen to them in the first place. I've said it in another comment recently, but what's to stop a class of rambunctious kids from locking their robo-teacher in a closet or something? The ethics of this whole situation are a clusterfuck.