CNN  — 

Friends, family and an entire Michigan high school are grieving the loss of four students after a 15-year-old sophomore allegedly opened fire during the school day, killing four peers and shooting seven others on campus.

A suspect was in custody and charged after Tuesday’s shooting at Oxford High School, authorities said. More than 100 calls to 911 were made during the attack.

The slain students were Madisyn Baldwin, 17; Tate Myre, 16; Hana St. Juliana, 14; and Justin Shilling, 17, authorities said. The incident was the deadliest shooting at a US K-12 campus since 2018 and the 32nd such attack since August 1.

Here’s what we know about some of the victims:

Madisyn Baldwin, 17

Madisyn Baldwin

Madisyn Baldwin was expected to graduate this year, her family told CNN affiliate WDIV, and had already been accepted to several colleges – some with full scholarships.

Her grandmother, Jennifer Graves Mosqueda, whom Baldwin knew as GiGi, announced the family’s loss on Facebook and created a GoFundMe campaign on behalf of Baldwin’s mother and father.

“This beautiful, smart, sweet loving girl was tragically taken from us all today leaving a huge hole in all of our hearts … ,” Graves Mosqueda wrote on Facebook. “This horrific day could never have been imagined or planned for.”

“My daughter and son-in-law would never ask for anything during this time, however I want them to be able to be with each other, their other children and family during this time without worrying about work, bills and arrangements,” she wrote on the campaign site.

Baldwin was an artist who loved to draw, read and write, her family told WDIV. She was the eldest of three siblings, had a younger half-brother and two sisters she loved dearly, they said.

Tate Myre, 16

Tate Myre

It’s clear Tate Myre was dedicated to his sport. He was a star football player who had earned a spot on the varsity team since he was a freshman at Oxford High School, the team said in a tweet.

Not only was he talented on the field, he excelled academically and was an honor student.

“It is with great grief that one of the victims of the tragic event at OHS today was one of our own, Tate Myre,” the team tweeted Tuesday evening. “Tate was a great young man with a bright future and beloved by all. You will be missed, Tate.”

Myre’s own Twitter account is full of game highlights and scrimmage videos showcasing his abilities. One of his last tweets, on November 28, thanked the University of Toledo football team for having him at one of their games.

A deputy after the shooting had loaded Myre into their car, where he died on the way to the hospital, the sheriff said.

“My life has been broken just like that,” Ty Myre, who identified himself as Tate’s older brother, wrote on Instagram. “Never in my life will I feel this pain again. This still isn’t right it can’t be. I miss you with everything in my heart Tate. What I would do to see to one more time.”

“Listen to your voice one more time, block for you one more time, wrestle one more time. I had such high hopes for your future and I couldn’t wait to see you make your dream come true and for me to be right by your side along that road.”

Growing up, the two argued and fought like siblings usually do, Ty said, but over the past two years they pair developed “a close bond,” and the loss of Tate has left his brother in shock.

An online petition has surfaced calling for the school’s football stadium to be renamed after Myre.

“Tate is not just a hero to his fellow students at Oxford High School but a legend, his act of bravery should be remembered forever and passed down through generations, he put his life in danger to try and help the thousands of other students at Oxford High School,” the petition says.

As of Friday morning, it had collected over 200,000 signatures.

Hana St. Juliana, 14

Hana St. Juliana

The Oxford High School women’s basketball team shared a tribute Wednesday to 14-year-old school shooting victim Hana St. Juliana.