How time flies: Kids on their first and last day of school (21 photos)

The first and last days of school are major milestones in everyone's life. Whether it's the very first day of first grade or your final day at university, these moments mark the beginning and end of defining chapters. Time flies amazingly fast, and we all change so much along the way. Looking back at how far you've come is always a wonderful feeling!

To mark the start of the new academic year, we've put together a collection of photos showcasing people on their very first and very last day of school.







Grown just a bit.





His mom snapped a photo on his first day of school every single year.



The son grew up and kept his great style—and Mom still looks fantastic.



First day of kindergarten and last day of med school.



Awesome shorts, man!



First day of first grade vs. first day of senior year in med school.



Best friends on their first and last day of school.



First day of kindergarten and last day of high school.



The car hasn't changed.



She waited 12 years to recreate this birthday cake moment.



Best friends: graduating from kindergarten vs. graduating high school.



What a cutie!



First and last day of school at the exact same front door.



John has officially outgrown his childhood growth chart.



Look how gorgeous she grew up to be!





First day of kindergarten and high school graduation.





First day of kindergarten and last day of school.



Lost his friend along the way?