PARIS, April 26 -- Preschoolers watch attentively as French actor Lucie Langlais Vignon, 41, holds up stuffed toys to tell the story of the bear cub who scolds the duckling for reaching up her skirt.

"Hands off kitty, they're my private parts," the teddy sings to the duck-and to children aged three to five sitting on mats and benches at a Paris kindergarten during the Easter holidays.

"Hands off kitty, you need to respect them."

By the time the play finishes, several kids are chanting its catchy chorus to themselves as they put their coats back on.

Parents in the French capital have been especially concerned about how to protect their children, after dozens of school aides-non-teaching staff who look after children during recess-were ...