For many parents, the day after Labor Day is full of mixed emotions, a blend of pride mixed with a touch of sadness that surfaces when their children – another year older – start the new school year.

And it's gotta be one of the most documented days on Facebook, as moms and dads flood social media feeds with pics of their fresh-faced kids.

We asked our readers to share their photos – thanks, parents, and good luck this year! It's hard not to smile at all these smiles ...

Mason, 6, yesterday and today:

From Amy Gunderson:

From Mike Ramos:

From Mary Busch:

From Rachel Harrison:

From Jenn Kerin:

From Robin Vetsch Martian:

From Lala Gadzhiyeva:

From Courtney J. Simpson:

From Laura Wood:

From Stacy Kohnen Keefe:

From Amy Elise Garner Jones:

From Sandra 'Barkley' Schwartz

From Julie A. Hall:

From Angela Jarvis:

From Julie Carson Lynch:

From Felisia Howey:

From Cori Fischer Amesbury:

From Robert Haberman:

From Jennifer Johnson:

From David Fredericks:

From Amber Dukhorn:

From Christi O'Rourke:

From Michelle Novak Sawin:

From Nicole Mathes:

From Stella Collins Gorman:

From Karl Langford: