It is a dark red building that looks similar to a boat. It has yellow roofs, metal blue chimney pipes, metal blue sliding doors, a red, yellow, white, and blue flag on top, and a wooden sign on top of two poles and a roof that reads "High School" in white letters outlined in red.
Pearl is talking to her friends at the school about her birthday.
It appears in the beginning when Pearl realizes she has a barnacle on her face. A school dance is said to be happening at this school.
Two kids come out of the school and tell each other that they both aced a test, as Patrick is watching them. Then, just before they do a high-five, Patrick as Patrick-Man runs in and accidentally gets slapped by the two. Patrick says to the two kids that violence solves nothing, and just before one of the kids says that they were not doing any violence, Patrick leaves since he is needed elsewhere.
Squidward hits its bell after being fired from a cannon of which the school's students come out, trampling Squidward.
In the episode "Whale of a Birthday," the high school is located right across from the Krusty Krab where the Chum Bucket should be.