What do you get when you throw together a poet, a pizza-loving chemistry whiz and an uptown girl with a pre-teen, an exchange student and a polyester pants-wearing nerd? A bunch of geniuses, that's what.
Charlie Moore, first as a substitute and then hired on, teaches history at Monroe High School in Manhattan. (And later, Millard Fillmore High.)
The program at Monroe High School is called Individualized Honors Program, or IHP. This fictional version is based on a similar real-life program at Walter Reed Middle School in Los Angeles.
The school musicals included "Grease," "Hair" and "Little Shop of Horrors." But, not "Hairspray."
Janice Lazarotto (played by Tannis Vallely), at 11 years old, is the youngest student in the class.
Maria grounds herself after getting a "B".
Darlene discovers she's a direct descendant of Thomas Jefferson.
Instead of sending a photo of himself, Arvid decides to send a photo of Eric to his penpal.
Brad Pitt makes a cameo as Maria's boyfriend.
Dennis and Arvid's science project makes it into the finals at NASA.
The students program a computer named Wilma to send love notes to Charlie.
Based on a letter he writes, Dennis is chosen to appear on the TV show "Open Forum." It's Darlene, though, who ends up appearing for IHP.
Eric, the leather jacket-wearing, motorcycle-riding "bad boy" of the IHP, is the only student in the class not on an academic team.
It's mentioned that Sarah has the lowest GPA in the IHP.
The IHP students make a video contribution to a time capsule, planned to be opened in 100 years. Unhappy with the result, Dennis ends up wrecking the video.
Because of his disruptive behavior in IHP, Mr. Moore sends Dennis to the remedial history class.
Janice says she's being followed by a poltergeist.
To keep his teaching certification, Charlie needs to pass a test in macro economics.
Alex Torres transferred to the IHP class from parochial school.
On-and-off couple Eric and Simone get engaged, briefly, during the final season.
Robin Givens and Mike Tyson were married in 1988, for 11 months.
Charlie and Arvid run into one another at a Woody Allen movie marathon.
Simone is voted editor-in-chief of the literary journal.
The Season 3 episode "Misson to Moscow" was filmed in the Soviet Union.
Jonathan Ke Quan, who plays Data in "The Goonies," appears as Jasper Kwan in the final two seasons of the show.
Charlie Moore went to pursue his lifelong acting dreams.
Alan Pinkard and Darlene Merriman compete to be named valedictorian.
T.J. Jones, played by Rain Pryor, is named valedictorian at the end of Season 5, the final season.
Howard Hesseman is well-known for his role as radio DJ Dr. Johnny Fever on the TV show "WKRP in Cincinnati," from 1978 to 1982.
Tony O'Dell, who plays Alan, is also known for playing Jimmy, a student at the Cobra Kai dojo and member of Daniel's Cobra Kai gang.
Brian Robbins, who played Eric, had appearances on "Growing Pains," "Mr. Belvedere" and "Three's Company." But never "Alf."
Leslie Bega went on to play the role of Valentina La Paz, Tony Soprano's girlfriend during Seasons 4 and 5 of the TV series "The Sopranos."
Dan Schneider, who played Dennis, is the creator of several children's shows, including "iCarly," "Zoey 101" and "Drake & Josh."
Billy MacGregor, played by comedian Billy Connolly, takes over the IHP.
The TV series "Billy," featuring IHP teacher Billy MacGregor, was the 1992 spinoff from "Head of the Class." It lasted 13 episodes.
Billy's plant is named Ringo.