Wildcats everywhere, wave your hands up in the air!

Zac Efron returned to East High from “High School Musical,” the hit Disney franchise that made him a household name.

“Don’t you… Forget about me ✊🏼,” the actor captioned an Instagram post Friday that showed him posing in front of the Salt Lake City school.

Though Efron seemed to be referencing the Simple Minds song from the iconic 1985 teen flick “The Breakfast Club,” his followers expressed hope that the post meant a “HSM”-related project is in the works.

“OMG please tell me a reunion is happening!” one fan wrote, while another added, “The way I need a reboot with you to happen! Troy forever ily Zac 💕.”

The former teen heartthrob paid a visit to the school one month after ex and former co-star Vanessa Hudgens did. ©Disney Channel/Courtesy Everet

Several fans noted that Efron’s ex and former co-star Vanessa Hudgens posted social media footage of her in front of East High just last month.

“But but but… Vanessa posted a similar one a few weeks ago. What does this mean?” someone asked. 

Another individual surmised that Efron, 34, and Hudgens, 33, could be making cameos on Disney+’s “High School Musical: The Musical: The Series.”

Efron’s fans expressed hope that a “HSM”-related project is in the works. ABC via Getty Images

“I hope this means you and Vanessa are guest starring on HSMTMTS,” another person wrote.

The pair memorably played lovebirds Troy Bolton and Gabriella Montez in the three “HSM” films, which were released between 2006 and 2008. Efron and Hudgens proceeded to date in real life, though they ultimately called it quits in 2010.

“Right off the bat, we had a connection,” the “Say OK” singer told Glamour the year they split. “I think everybody could see it. When we had our audition, they paired us together. And he was adorable.”

Efron and Hudgens, who played couple Troy Bolton and Gabriella Montez in the Disney films, dated for years in real life before splitting in 2010. Getty Images

Although things reportedly ended amicably, Hudgens told “Access Hollywood Live” in 2017 that she and Efron eventually stopped talking.

“Oh, yeah, no … that’s not a thing that happens,” she admitted. “I completely lost contact with him.”

It remains to be seen whether Efron reconnects with Hudgens at East High.

Three “High School Musical” movies were released between 2006 and 2008. ©Disney Channel/Courtesy Everet

Meanwhile, like most of his fans, the Hollywood hunk’s old TV dad and basketball coach is happy to see him back in Wildcats territory.

“Warms coaches ole heart to see this,” commented actor Bart Johnson, who played Coach Jack Bolton. “Welcome home, son. WHAT TEAM!? 🏀🐾.”