Final answer:
The crime committed at Ridgemont High School would likely be classified as vandalism, which is the destruction of or damage to public or private property. Depending on local laws, additional charges such as burglary or trespassing could also be applicable.
Step-by-step explanation:
The crime that was committed when several students broke into Ridgemont High School gym, damaged the equipment, and sprayed graffiti on the walls would typically be classified as vandalism. Vandalism is the action involving deliberate destruction of or damage to public or private property.
In some jurisdictions, this crime can also fall under criminal mischief, property damage, or defacement. Since the students' actions included illegal entry into the building, they may also be charged with burglary or trespassing. Burglary involves illegal entry into a structure with the intent to commit a crime inside, and trespassing refers to unlawfully entering another person's property without permission. The specific charges can vary depending on the rules and laws of the jurisdiction where the high school is located.