I.N.K.: Mission Invisible! (Season 1)

The story takes place in Pinkerton, a quiet little school. Everything there would be fabulous if it weren’t for Saddy MacBeth, surely the world’s worst teacher, who’s determined to turn Pinkerton into a school where all the pupils are obedient, and where she gives them all kinds of punishments!
As mean as she is stupid, she’ll do anything to get her way: twisted plans and madcap machines are Mrs. Macbeth’s daily routine! But luckily, to stop her, there’s “Mission: Invisible!”, a group formed by five children: Vin, Zero, Trixie, Newton, and Jordan whose goal is to undermine MacBeth’s plans.