To celebrate the back-to-school season, we rounded up some of our favorite first-day-of-school photos celebrity parents shared of their kids this year. We're going to let you in on a little secret ...

And while many parents want to share their kids' first day of school snaps with family and friends, a digital safety expert says posting these photos online opens the door to online security concerns.

posting four photos of her son grinning widely and wearing glasses, a blue and white color-block T-shirt and a green backpack. He even had his own mini briefcase! “First day of school!