Student sections from Andrean and Bishop Noll have created a controversy with their behavior and chants during the game between the two teams Friday.
Both student sections are known for attending games with elaborate costumes and ongoing chants.
At Friday's game, a student from Andrean brought a large photo of Republican presidential candidate Donald Trump. During the game, the Niners students began chanting to the Bishop Noll students across the gym "Build A Wall," which was followed by the Warriors students chanting "You're A Racist."
The Andrean students began pointing to the African-American students in their student section, to which the Bishop Noll students chanted "You're A Token." Some fans at the game were insulted because of Trump's views about immigration.
The exchange, particularly the Trump photo and the Noll students' response, caught fire on social media.
Ashley Howard, the Morton volleyball coach whose brother played for and graduated from Noll, posted photos of the Andrean student section on Facebook, a post that was shared more than 2,000 times as of Saturday evening.
Howard also wrote: "And due to the outrageous and racist remarks made in the media by Donald Trump the sign is extremely offensive (as it is meant to be). I ask you..... What kind of administration allows its students to support HATE SPEECH and RACISM openly at a school sponsored event......." (sic)
"I put it on Facebook, where I have just a couple of close friends, and I didn't know if it would catch on, but I'm happy that it has," Howard said. "If these were my (volleyball) girls, this would not fly at all. Just to see the administration not doing anything about it was disturbing. I'm glad it has caught on because it is forcing people to talk about it."
Andrean officials did not respond to calls Saturday night.
Paul Mullaney, president of Bishop Noll Institute, said "We are dealing with it internally," and declined further comment.
Coaches from both teams said after the game that they enjoyed the rivalry atmosphere.
Howard said neither prior to her post nor after had she spoken with administration from either school.
"I have gotten some notes in my in box on Facebook from people asking me questions; why do I have a problem with this?" Howard said. "People from all different races, from parents to students, and it doesn't seem like the kids had a problem with this. It's sad to me that they don't know to be offended, and they're happy to sweep this kind of behavior under the rug."