The first season of Degrassi High premiered on November 6, 1989 with 15 episodes. It portrays the 1990-1991 school year.

Main CastEdit

The following actors recieved star-billing:

Grade 11Edit

• David Armin-Parcells as Claude Tanner, an 'environmental activist' and goth kid poseur, Caitlin's new love interest.

Grade 10Edit

• Neil Hope as Derek "Wheels" Wheeler, a troubled orphan, plays bass in the band Zit Remedy.
• Stefan Brogren as Archibald "Snake" Simpson, a tall, friendly student, plays guitar in the band Zit Remedy.
• Anais Granofsky as Lucy Fernandez, a worldly, popular girl with neglectful parents who is starting to take an interest in filmmaking.
• Amanda Cook as Lorraine "L.D." Delacorte, an athletic tomboy and feminist secretly battling leukemia.
• Angela Deiseach as Erica Farrell, a loud, boy crazy girl who has a love/hate relationship with her twin sister, which reaches a breaking point when a summer fling gets her pregnant and she has an abortion.
• Maureen Deiseach as Heather Farrell, a somewhat timid girl with strong religious beliefs who has a love/hate relationship with her twin sister.
• Amanda Stepto as Christine "Spike" Nelson, an easy-going, punk-rock girl who is dealing with being a unwed teen mother and trying to find love.
• Cathy Keenan as Liz O' Rourke, an opinionated, punk rock girl who creates conflict with her classmates with her strong beliefs on abortion and animal rights.
• Irene Courakos as Alexa Pappadopolos, an overly dramatic, boy-obsessed girl. 
• Michael Carry as Simon Dexter, a cute, dim-witted student and Alexa's boyfriend, famous around school for his budding modeling/acting career.
• Maureen McKay as Michelle Accette, a shy girl from a broken home now struggling to live on her own, Alexa's close friend.
• Dayo Ade as B.L.T. Thomas, an athletic student and talented basketball player, Michelle's supportive boyfriend.
• Sara Holmes and Jacy Hunter as Amy Holmes and Alison Hunter, inseparable best friends, stuck up and snobby troublemakers.

Grade 9Edit

• Pat Mastroianni as Joey Jeremiah, a humorous and immature class clown dealing with a learning disability, plays keyboard in the band Zit Remedy.
• Stacie Mistysyn as Caitlin Ryan, a human rights activist and aspiring journalist who gets into trouble with the law when she takes her activism to the next level.
• Kyra Levy as Maya Goldberg, a Jewish girl in a wheelchair, Caitlin's close friend. 
• Sara Ballingall as Melanie Brodie, a gawky but open-minded girl always trying to 'fit in'.
• Rebecca Haines as Kathleen Mead, a gossipy girl with a bad attitude who falls into a physically abusive relationship with an older boy.
• Chrissa Erodotou as Diana Economopoulos, a boy-crazy, chain-smoking girl with strict Greek parents. 
• Duncan Waugh as Arthur Kobalewscuy, an awkward, newly wealthy outcast struggling with losing his best friend to a 'cool' new crowd.
• Siluck Saysanasy as Yick Yu, a former nerd who has beginning to re-invent himself, falling in with a 'cooler' crowd.
• Christopher Charlesworth as Scooter Webster, a short 'advanced development' geek making first attempts at dating girls.
• Trevor Cummings as Bartholomew Bond, a smart, snobby pipsqueak, Scooter's close friend.
• Kirsten Bourne as Tessa Campanelli, a hyperactive, immature girl just discovering boys. 

AdultsEdit

• Adam David as Mr. Walfish, the 'hip' English teacher, generally seen teaching grade 10.
• John Weir as Mr. Webster, the Scottish science teacher, generally seen teaching grade 9.
• Dan Woods as Daniel Raditch, former junior high teacher, now the school vice principal. 
• Michelle Goodeve as Karen Avery, former junior high teacher, now the school librarian.

Recurring CastEdit

• Steve Bedernjak as Clutch, a older, hard drinking, troublemaking student, Lucy's on-again off-again boyfriend. (Grade 12)
• Vincent Walsh as Patrick, an Irish punk rocker and Spike's love interest. (Grade 11)
• Byrd Dickens as Scott Smith, Kathleen's physically abusive boyfriend. (Grade 11)
• Darrin Brown as Dwayne Myers, the school bully who carries out 'initiations' on the new students to Degrassi, Joey's nemesis. (Grade 10)
• George Chaker and Michelle Johnson-Murray as Nick and Tabi, school bullies and Dwayne's partners-in-crime. (Grade 10)
• Arlene Lott as Nancy Kramer, a know-it-all, active student who keeps herself updated on everything. (Grade 10)
• Keith White as Tim O'Connor, a smart, bookish student, Nancy's best friend. (Grade 10)
• Andy Chambers as Luke Matthews, a troublemaking student involved in drugs. (Grade 9)
• John Ioannou as Alex Yankou, the school's biggest nerd. (Grade 9)
• Danah-Jean Brown as Trish Skye, a quiet red-headed girl, active in many school activities. (Grade 9)
• Tammy Campbell as Trudi Owens, a punk rock student with a bright red streak in her hair. (Grade 9)
• Annabelle Wough as Dorothy, Arthur's geeky cousin. (Grade 9)
• Ashlee Henricks as Emma Nelson, Spike's daughter.
• Bronco Davis (L. Dean Ifill) and Joanne Rutherford (Krista Houston) appear as background students in several episodes.

Episode ListEdit

Main article: Episode Guide