Nicole "Snooki" Polizzi
"So proud of my babies!" the Jersey Shore star shared on Instagram. "The sky is the limit my squirrels."
Hilaria Baldwin
"If you've been following me for a while, you know how big of a deal this is…he always felt left out when his siblings (aka his 'friends,' as he calls them) would go to school and he stayed home," the best-selling author shared on Instagram. "He would put his backpack on every day and practice going to school and talk about all the things he was planning to learn…today dreams come true."
John Legend and Chrissy Teigen
"And so it begins!!!" the cookbook author wrote alongside a photo of her 3-year-old son Miles starting his first day of pre-K. The major moment brought a tear to her eye, and Chrissy captioned a photo of her 5-year-old daughter Luna's first day of kindergarten with the words "It's happening" and a crying emoji.
Jessica Alba
"Hayes 1st day of preschool. It just goes too fast… sigh," The Honest Company founder wrote online. "I love the goofy smile...lookin like his daddy @cash_warren."
Jessica Simpson
"Little Miss Birdie is the BOSS," the fashion designer wrote on social media. "She says 'I want school right now please.' We say, 'Ummm you are only 2 Bird...' Gosh darn #BIRDIEMAE is in Pre-School."
Jessica Alba.
"My Havie #5thgrade," the proud mom wrote online after sending her daughter off to school
Carey Hart
"Jameson's 1st day of pre school," the proud dad wrote on Instagram. "He is growing like a weed!!!!! So proud of you, lil man."
Ice-T
"First day of Kindergarten for @babychanelnicole," the Law & Order: SVU star wrote on Instagram. "@spartandmaxandlex in the reflection. #Priceless."
Kailyn Lowry
"Trying to get a picture for @isaacelliottr & @lincmarroquin's first day of 6th & 2nd grades," the Teen Mom 2 star wrote on Instagram. "Day two for @luxrlowry & @creedlowrylopez."
Daphne Oz
"Sorry yes that was just my heart exploding," the celebrity chef described on social media. "Gigi is in preschool! you will be thrilled to know the Duchess thoroughly enjoyed her first day and plans to return."
Lydia McLaughlin
"It's really does go so fast!" the former Real Housewives of Orange County star shared on social media. "I am enjoying this season we are in as a family, and wish I could slow it all down. #proudmama."
DeAnna Pappas
"First day of school! Addison is in 2nd grade & Austin is in Kindergarten," ABC's former Bachelorette shared. "And Mama has a house to herself."
Jessica Alba
"Honor's first day of 8th grade," The Honest Company founder shared on social media. "A proud (& obviously crying) mama."
Tamar Braxton
Me and my bestie @loganland8 first day of school," the singer and reality star wrote on Instagram. "3rd grade came so fast…but praise God cause Logan gets his friends back and I get my daytime back while he's in school. Won't he do it!! We are BOTH excited."
Ashlee Simpson Ross
"All the feels today," the singer shared as daughter Jagger Snow Ross headed off to her first day of school.
Teddi Mellencamp
"Raise your hand if you forgot to get a fresh #firstdayofschool board and couldn't get the marker off from years prior," the former Real Housewives of Beverly Hills star joked online. "This is 3rd and 1st grade. Proud of these nuggets. They did 80 percent of school last year over zoom and are so excited to see friends in person!"
Tarek El Moussa
"Bray's first day of kindergarten!!" the Flip or Flop star wrote on Instagram. "We picked Bray up for a surprise lunch with a gift for him so that he would always remember his first day of kindergarten and he went straight for Bugz."
Chelsea Houska
"Our handsome boy!" the former Teen Mom 2 star wrote on Instagram after celebrating Watson's first week of classes.
Jessica Simpson
"After a year and a half these HAPPY kiddos are BACK TO SCHOOL!!!!!" the star captioned a snapshot of daughter Maxwell and son Ace. "New school. New beginnings. This fam is feeling very blessed."
Jon Gosselin
The reality-TV alum shared a photo of his son Collin Gosselin and daughter Hannah Gosselin, both 17, starting their junior year of high school.
Ali Fedotowsky
"Riley‘s preschool is soooo precious. I can already see how comfortable he is there after only a few days. And after months of tears and tough drop offs, I really feel we found the absolute best fit for him," The Bachelorette star wrote on Instagram. "And Molly starting kindergarten…Oh my. Where has the time gone?"
Tamera Mowry
"First day of school pic! Third and first grade," the Sister, Sister star shared online. "Time seriously flies!"
Tyler Hubbard
"Liv had her first week of school this week, and we couldn't be more proud," Tyler's wife Hayley Hubbard wrote on Instagram. "(and neither could her little brothers)."
Amanda Stanton
"I have a 4th & 2nd grader!" the Bachelor Nation member reflected online. "The first day of school always makes me a little emotional."