I just pulled up the SJC Handbook.
https://www.stjohnschs.org/userfiles/sjchsmvc/documents/parents-resources/2023-2024-Student-Parent-Handbook-August-2023.pdf
Pages 20-25 speak generally to behavior and disciplinary procedures. A few pages later this is the section that specifically applies to behavior at athletic events:
"At athletic events, students are expected to always conduct themselves in a sportsman-like manner. This means that students are
to treat players, coaches, officials, and all fans with courtesy and respect. The use of profanity will not be tolerated. Any violation
of these guidelines will result in removal from the event and may result in further disciplinary action. Certain egregious forms of
misconduct may also lead to dismissal."
This speaks only about students, but basically if a student behaved this way they could face serious disciplinary consequences. Hypocrisy if SJC doesn't hold its adults to the same standards.