Quaker Valley’s Mimi Thiero named 2024-25 TribLive HSSN Girls Athlete of the Year

By: Chris Harlan
Tuesday, July 1, 2025 | 6:01 AM

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TribLive HSSN Girls Athlete of the Year

Mimi Thiero

Quaker Valley

Junior

Basketball, track and field

Mimi Thiero is going places.

After wrapping up her junior year at Quaker Valley, Thiero was off to Colorado where USA Basketball welcomed her and 26 other under-19 players to compete. She was invited to Tampa in April. Now, she’s in Los Angeles, with her brother, Adou, who was drafted last week by the NBA’s Lakers.

“Being in New York for the draft was actually a lot of fun,” she said.

There’s also an ever-growing list of college basketball coaches who want her to come visit their campuses soon. The 6-foot-4 guard/forward showed why this past winter in gyms across the WPIAL.

Thiero averaged a double-double with 23.1 points and 16.7 rebounds for the Quakers, along with 3.9 steals, 3.8 blocks and 3.2 assists per game. She earned both all-section and all-state honors, as well as a spot on the Trib’s Terrific 10.

But she wasn’t done.

In the spring, Theiro won a WPIAL high jump title, placed second in the state in that event and helped her Quakers win a couple of team track titles. For her successes in both sports, Theiro is the TribLive HSSN Girls Athlete of the Year for the 2024-25 school year.

Her future is certainly in basketball.

ESPN has her ranked 35th nationally among all girls basketball players in the 2026 graduating class. The latest additions to her growing scholarship lists arrived from Ohio State, Georgia, Houston, Kentucky, Vanderbilt, Arizona and Missouri.

She has more than 50 offers.

This past season, she saw the Quakers improve from a 5-16 record in her sophomore year to 15-10 as a junior. She scored 30 or more points five times and grabbed 20 or more rebounds six times, helping her team to ultimately reach the WPIAL Class 4A quarterfinals.

She already ranks third in Quaker Valley girls basketball history with 1,248 points. All while her opponents scheme to stop her.

“I see it as a compliment,” Thiero said. “If a team comes out and their one goal is to stop me, then I’m not going to let them do that. I love playing basketball, so I really have a lot of fun. I don’t think it’s tiring or annoying if I’m getting a box-and-one or double-teamed.”

In the spring, Thiero cleared 5 feet, 8 inches to win the high jump at the WPIAL Class 2A track championships. Her winning height was a personal best.

“I always thought I had a shot, but I really wasn’t expecting it at WPIALs,” said Thiero, who placed third as a sophomore. “I’m pretty sure I (jumped my season best) by four inches. That’s definitely a lot for high jump, but it was always my goal.”

A week later, she leaped 5-7 at the PIAA championships and took second. Her contributions helped Quaker Valley also win WPIAL and PIAA team track championships. At the WPIAL team track finals, she also ran the 100 and 200 meters.

She is still a newcomer to track, having started the sport only in eighth grade.

“The most enjoyable (part) is that everyone at high jump is so nice,” she said. “I’ve made a lot of friends. When you’re going to meets and invitations, you’re really jumping against the same people four or five times a year.

“It’s also a lot of fun because you can’t be mad at anyone else for them doing good, so everyone is always positive and uplifting you.”

Chris Harlan is a TribLive reporter covering sports. He joined the Trib in 2009 after seven years as a reporter at the Beaver County Times. He can be reached at charlan@triblive.com.

Tags: Quaker Valley