Was it part of your job to escort truant students to television studios?
No. It is their job to do what the command staff says to do. When Multiple hundred of kids are marching down the streets, would you rather they go without police "escorting" them? That word wasn't used by the police, I don't think.
Do police "escort" other marches? Or do they make sure they don't get out of hand with threat of force?
By the way. There are 300 officers on that department to about 700,000 students. So it would be impossible to round them all up anyway.