As Summer Heights High School begins a new term, we meet the primary subjects of this 'documentary' series: disruptive Tongan student Jonah; deluded drama teacher Mr. G; and self-absorbed exchange student Ja'mie.

Ja'mie scales the social ladder on her first full day at school; Mr. G makes the most of an unexpected promotion; Jonah joins an ethnic-acceptance program to curb his behavior and improve his academics, with mixed results.

Mr. G finds musical fodder in a school tragedy; Ja'mie dates a younger boy from Year 7; Jonah is toppled from his break-dancing throne.

Ja'mie undermines her relationship with her new friends; Mr. G holds auditions for his new musical; a suggestive drawing puts Jonah's irate father on the defensive.

Mr. G is forced to make concessions in the school play; Jonah and his pals agree to mentor a group of Year 7 students in exchange for a break-dance performance; Ja'mie lobbies for a first-ever Year 11 formal.

Parental objections force Mr. G to overhaul his musical 10 days before the premiere; Ja'mie makes a surprising date choice for the Year 11 formal; Jonah's ongoing turf war with Year 7 hecklers lands him a suspension.

With ticket sales nil, Ja'mie decides to fund the Year 11 formal by staging an AIDS fashion show; Mr. G is faced with a hard career choice as the premiere of his musical approaches; Jonah resists breaking a break-dancing ban, but irks Ms. Wheatley.

In the Season One finale, Mr. G revels in the premiere of his musical; Ja'mie is forced to find a new date on the day of the Year 11 formal; Jonah returns to Gamnut Cottage for Story Day, then gives a final farewell gift to kids and teachers of Summer Heights High as the semester officially ends.