Graduating seniors at Marjory Stoneman Douglas High School honored their classmates killed in the February shooting with decorated mortarboards.

Four of the students killed in the attack would have walked in Sunday’s ceremony.

Carly Ogozaly, whose best friend, Meadow Pollack, died in the shooting, shared a photo of her cap honoring Pollack with CNN.

“We are still in this together,” the cap read, next to a photo of Pollack.

Marjory Stoneman Douglas High School shooting victim Meadow Pollack’s best friend Carly Ogozaly sent CNN this photo of her mortar board at graduation today commemorating the life of her best friend. pic.twitter.com/UFoReVzxIE — Jake Tapper (@jaketapper) June 3, 2018

Other students posted photos of their graduation caps on social media.

“Nick, Joaquin, Meadow and Carmen are not graduating with us but they are with us in spirit,” one student wrote on Twitter, naming the four seniors killed. “Today is for them.”

Nick, Joaquin, Meadow and Carmen are not graduating with us but they are with us in spirit. Today is for them. I hope you’re proud of me Nick #MSDstrong pic.twitter.com/M8CiZkH5lZ — Hannah // MSD STRONG (@Han_inthemirror) June 3, 2018

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David Hogg, who has become one of the most nationally recognized Parkland survivors in the conversation on gun control, covered his mortarboard in orange, the color representing gun-control advocacy.

Hogg also added a price tag as a tassel, to call out Florida Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R) for accepting donations from the National Rifle Association. Hogg introduced the price tags at the March For Our Lives.

Another student marked her cap with “17 dots for 17 eagles,” representing the 17 people, including faculty, who were killed in February.

17 dots for 17 eagles.

A math pun, because puns.



Maroon and silver, for I will forever be an eagle. #MSDStrong pic.twitter.com/yxG1ecQFW5 — Sara Imam // #NEVERAGAIN (@_saxarmaxim) June 3, 2018

And a teacher at the school shared a photo of a cap reading "MSD Strong," students' rallying cry in the weeks after the shooting, on Twitter.