The adorable youngster looked handsome in his purple robes and matching graduation cap.
Maci shared the cute moment to her Instagram account and included a close-up photo of Maverick looking grumpy at the event.
"Look out kindergarten, Mav is coming in hot! #schoolsoutforsummer #thingsthatmatter," Maci captioned the post.
Her fans loved the video and congratulated the youngster on graduating.
"Mav is always a whole mood - congratulations buddy," wrote one Instagram user.
Another added: "Awww MAV!!!!! Congratulations buddy!!!"
And a third said: "Omg congrats. He’s so cute."
Previously, Maci appeared on the podcast where she admitted that she and her husband, Taylor McKinney, are currently deciding .
When asked if she's planning to follow in 's footsteps and leave the franchise, she said: "Honestly it's a season-to-season decision.
"But I think right now definitely more than ever we're leaning more toward
deciding when the right time to move on is.
"And if we do move on from the show would it be to stay in TV and just go a different direction? Or do we kind of want to leave TV behind for good?"
Although they would potentially consider a different kind of reality show, Maci explained that their time on Teen Mom depends on how the show's drama affect their kids: Bentley, 12, Jayde, six, and Maverick.
She continued: "But it really all depends on how it affects our children, especially since Bentley [Maci's son with ex Ryan Edwards] is in middle school which is a tough age in general and Jayde, she'll be in first grade in the fall.
"...and then Maverick will start kindergarten in the fall so it is kind of getting to that time especially for our kids.
"But I don't know, it's really season-to-season."
The TV star added that if they were able to keep their children's appearance on the show to "B-roll" footage then they would consider staying long-term.
Maci admitted: "If we're able to film and kind of leave the kids for more of the B-roll like the funny stuff. I think we're OK with… It just depends really".
Maci has been apart of the franchise since 2009 when she first starred in 16 & Pregnant alongside her ex Ryan Edwards as they welcomed son Bentley.
Later that year she was cast in the spin-off series Teen Mom, and appeared in each of its four seasons until it ended in 2012.
She has starred in since 2015 along with Catelynn Baltierra, , and .
The star has been clashing with Bentley's dad, Ryan and his wife Mackenzie for months over her parenting of the preteen.
Ryan, Mackenzie and his parents Jen and Larry from the reality series last month.
At the reunion, Larry clashed with Maci's husband Taylor McKinney.
Taylor and Larry as their argument over Ryan's parenting of Bentley threatened to turn physical.
When asked if he thinks Ryan is sober now following years of drug abuse, Taylor responded: “No I don’t. This is our opinion.
"It’s based on when he shows up to something or when you see him sitting there in a scene and he can’t hardly keep his eyes open. That’s not a place I feel safe to send our son with that guy.”
Larry yelled: “Hold on. You said that we put [Bentley] in an unsafe situation. Let me tell you something. Never would that ever happen. Ever.”
Taylor jumped off the couch and fired back: "Don't you buck up to me!"
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Maci has also been feuding with Mackenzie, throwing shade at the 24-year-old by in a dig at the insult Mackenzie previously hurled at her.
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She poked fun at Mackenzie by selling a $26.95 "Petty B***h" logo tee from her Things That Matter clothing company.
Back in February, Mackenzie and Ryan after Bentley .