* Trademark infringement is a serious matter but often handled quietly. If a high school uses a college logo without permission, the college likely would contact the school privately to cease and desist. A lawsuit is a last resort and rarely makes headlines unless the infringement is particularly egregious or prolonged.
* Parody or fair use is possible. Sometimes, a similar-looking logo might be a coincidence or an unintentional resemblance, not deliberate infringement. A parody (though unlikely with a college logo) could also fall under fair use.
* Many schools use similar color schemes and fonts. While a high school might not directly copy a college logo, they might have a similar color scheme or a font that resembles one, without it being a direct infringement.
To illustrate a *hypothetical* scenario that could lead to problems:
Let's say "West High School" uses a logo incredibly similar to the University of Michigan's "Block M." If West High's logo is nearly identical, including the color scheme, font, and overall design, the University of Michigan's legal team would likely contact West High. They'd probably request the school stop using the logo. West High would likely comply to avoid costly legal battles. The whole situation might never reach public knowledge.
In short, while no specific, widely-known example of a major high school versus college logo dispute exists in the public domain, it's reasonable to assume such incidents occur and are resolved privately. The lack of public information highlights that most instances are handled directly between the parties involved.