Kim Kardashian’s kids are back in school.Instagram/@kimkardashian

School is in session for Kim Kardashian’s kids!

The reality star posted sweet snaps with her and ex-husband Kanye West‘s little ones via Instagram Tuesday now that “school daze [sic] are upon” their family.

The “Keeping Up With the Kardashians” alum started off her slideshow with a sweet selfie featuring daughter North, 11, son Saint, 8, daughter Chicago, 6, and son Psalm, 5, crowding around their mom.

The reality star posted sweet snaps via Instagram on Tuesday. Instagram/@kimkardashian00:0304:18

“school daze is upon us,” she told her Instagram followers

The foursome showed off their uniforms in the second and third snaps, with Kardashian, 43, joining them in the final group photo.

North and Chicago matched in black polo shirts, navy plaid skirts, Nike socks, and sneakers.

The preteen wore her hair in space buns and accessorized with a stack of bracelets, showing off her braces with a big smile.

The little ones wore uniforms.kimkardashian/Instagram

Jonathan Cheban gushed over how grown-up North looked. Kim Kardashian/Instagram

Psalm sported a red button-up and khaki shorts, while his older brother rocked a zipped-up gray hoodie and black shorts.

The “Kardashians” star’s followers gushed over how “grown up” her “beautiful” brood looked, with many calling Psalm’s serious facial expressions a “mood.”

The makeup mogul’s friend Jonathan Cheban commented, “Wait that’s Northie??????”

The “Kardashians” star shares her 𝘤𝘩𝘪𝘭𝘥ren with ex-husband Kanye West.Felipe Ramales / SplashNews.com

The duo broke up in 2021.Instagram

Kardashian became a mom in 2013 when she and West, 47, welcomed North, followed by Saint, Chicago, and Psalm in 2015, 2018 and 2019, respectively.

Since the former couple called it quits in 2021, the Skims creator has spoken candidly about how “f–king hard” co-parenting is.

“I’m holding on by a thread,” she told “Angie Martinez IRL” podcast listeners in December 2022, the same month West moved on with wife Bianca Censori.

The Skims creator has called co-parenting “f–king hard.”Instagram

She claimed to be “holding on by a thread” in 2022.SplashNews.com

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Kardashian and the rapper have publicly butted heads over North’s TikTok usage among other things while raising their 𝘤𝘩𝘪𝘭𝘥ren.

The businesswoman, who explained to Time magazine that she will “fight for” her eldest 𝘤𝘩𝘪𝘭𝘥’s creative outlet, runs a joint account on the platform with North and recently allowed Saint to start a YouTube channel.

After showing off the “extensive contract” her son signed, the law student gushed over how it has brought North and Saint “closer together.”