The title of this article is a conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
The Waverly Hills Elementary School groundskeeper is an unnamed groundskeeper who works at Waverly Hills Elementary School.
One of the rumors about Bart the students told each other was that Bart killed the groundskeeper at his old school. When the groundskeeper heard it, he nervously said that was a bit rough.