Naomi Watts Shares Snap of Daughter Kai, 15, as She Leaves for First Day of Junior Year: 'Here Comes 11th Grade'

Watts shares her daughter and son Sasha with ex Liev Schreiber

<p>ANDREA RENAULT/AFP via Getty Images</p> Naomi Watts and daughter Kai

ANDREA RENAULT/AFP via Getty Images

Naomi Watts and daughter Kai

Naomi Watts' daughter is heading back to the classroom!

On Thursday, Sept. 5 the actress, 55, shared a photo on her Instagram Stories as her daughter Kai, 15, left for her first day of junior year of high school. Watts captured her daughter walking to school, wearing a pink tank top and denim skirt, carrying a tan Longchamp bag.

"Here comes 11th grade!!" Watts wrote across the picture.

Watts shares her daughter and son Sasha, 17, with ex Liev Schreiber, 56.

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<p>Naomi Watts/Instagram</p> Naomi Watts shares photo of Kai on her first day of junior year.

Naomi Watts/Instagram

Naomi Watts shares photo of Kai on her first day of junior year.

Related: Liev Schreiber and Naomi Watts' Son Sasha Looks All Grown Up as They Celebrate His 17th Birthday

In July, Schreiber posted on Instagram in honor of his son Sasha turning 17. "Happy Birthday Handsome!" the proud dad captioned a photo of the father-son duo posing together in front of a step and repeat.

Watts, who split from Schreiber in 2016, also shared a sweet birthday tribute for Sasha on her Instagram. The actress posted two shots of the mother-son duo from her second wedding to husband Billy Crudup in June.

"Happy Birthday to my darling Sasha- you have a heart of gold. I'm so very proud of you," the mom of two wrote in her caption. "17 years ago you shot into the world with your arms reaching for the sky. You are a force but with the most gentle soul."

She continued to show her gratitude, writing, "I thank my lucky stars that you chose me to be your mum. And I'm so very grateful to have you by my side here. I love you. Keep reaching for the stars. ✨💛."

<p>ANDREA RENAULT/AFP via Getty Images</p> Naomi Watts and Kai

ANDREA RENAULT/AFP via Getty Images

Naomi Watts and Kai

While appearing on Live with Kelly and Mark on Monday, April 15, Schreiber shared, "They're amazing. Sasha and Kai, you know them."

"They love her. It's been really great," he added of his baby girl Hazel Bee with wife Taylor Neisen.

"I just talked to Sasha, who's up at this terrific school in Vermont called The Mountain School, where he's taking care of animals, and he just said that he's bummed out because he's missing being with her," he told Kelly Ripa and Mark Consuelos of his kids.

"And it's just, so sweet. My god. Such a sweetheart. And he did this little film for his class that he just sent me last night which was a short film. He made an adaptation of Doris Lessing's Through the Tunnel, which is basically about a kid who doesn't want to grow up because he loves being a kid so much."

"You know when your kids do things like that that just...you know, because they're such monsters 99% of the time. And then they do something so profoundly sweet and you're just like, 'Wow,' " the star joked.

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