I went to three high schools, and since I don't want to pick I'll just copy the Notable Alumni sections from wiki.
First School:
Matthew J. Dolan, Ohio State Senator
Paul Dolan, chairman/CEO of the Cleveland Indians Major League Baseball organization
John Gilmour, ice hockey player
Ray Gricar, former District Attorney of Centre County, Pennsylvania
Douglas Kenney, writer, actor, and producer
Russell Potter, professor of English at Rhode Island College
Phoebe Robinson, comedian, actress, podcaster, and author
Barbara Romer, film producer[13]
Art Rooney II, president of the Pittsburgh Steelers National Football League organization
Andy Selfridge, football player
Steve Skrovan, television writer
John W. Snow, 73rd United States Secretary of the Treasury
Brian Stepanek, film/television actor
Second School:
Chris Bando, former MLB catcher, Cleveland Indians, Detroit Tigers, Oakland Athletics
Michael Cartellone, current drummer for Lynyrd Skynyrd, former drummer for the Damn Yankees
Drew Carter, former NFL wide receiver, Oakland Raiders, Carolina Panthers, former NCAA football player, Ohio State University
Kid Cudi, rapper, singer, record producer, and actor
Dominick Farinacci, jazz trumpeter, composer, and big band leader
Kim Herring, former NFL safety, Cincinnati Bengals, Baltimore Ravens, St. Louis Rams
Dallas Lauderdale, former NCAA basketball player, Ohio State University, current player Maine Red Claws
Jim Mandich, former NFL tight end, Miami Dolphins, Pittsburgh Steelers, former NCAA football player, University of Michigan, sports radio talk show host
Dave Meggyesy, former NFL player, Arizona Cardinals, former NCAA football player, Syracuse University, author, teacher, union organizer
Mark Minor, former NBA player, Boston Celtics
Jeff Passan, lead baseball columnist, Yahoo! Sports, author (Death to the BCS: The Definitive Case Against the Bowl Championship Series)
Marc Sumerak, freelance comic book writer, former writer and editor, Marvel Comics
Jack Van Antwerp, former Director of Photography, The Wall Street Journal
Third School:
Bruce Caldwell played in both Major League Baseball and the National Football League [8]
David Macaulay (class of 1964) is an author and Caldecott Medal-winning illustrator[9]
Aaron Fricke (class of 1980) is a gay rights activist
Johnny Goryl, MLB player (Chicago Cubs, Minnesota Twins)
John LaRose, MLB player (Boston Red Sox)
Daniel Stewart (class of 1980) was the first openly gay elected mayor in New York State history - Mayor of Plattsburgh, New York (20002006), and now serves as Chairman and Commissioner of the New York State Commission of Correction [10]
Linda Nochlin (class of 1947) was a leading figure in the abstract expressionist art movement, and one of the first American women to gain notoriety as an artist
Peter John Farrelly (born December 17, 1956) is an American film director, screenwriter, producer and novelist.
Robert Leo "Bobby" Farrelly, Jr. (born June 17, 1958) is an American film director, screenwriter and producer.
Suzanne Martin (Moore) (class of 1977) is an Emmy Award-winning television producer and creator of the show "Hot In Cleveland"
Annette Nazareth (Class of 1974) was a Commissioner of the U.S. Securities and Exchange Commission from August 2005 to January 2008.
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Forget your lust for the rich man's gold All that you need is in your soul