Summer Heights High is an Australian television mockumentary series written by and starring Chris Lilley. It is a parody of high-school life epitomised by its three protagonists: effeminate and megalomaniacal "Director of Performing Arts" Mr G; self-absorbed, privileged teenager Ja'mie King; and disobedient, vulgar Tongan student Jonah Takalua. All played by Lilley, the characters never interact. It lampoons Australian high school life and many aspects of the human condition and is filmed in a documentary style, with non-actors playing supporting characters.

Following a similar format to Lilley's previous series, We Can Be Heroes: Finding The Australian of the Year, Lilley plays multiple characters in the show. Filmed in Melbourne at Brighton Secondary College, the series premiered on 5 September 2007 at 9:30 pm on ABC TV and continued for eight weekly episodes. Each episode was also released as a weekly podcast directly after its screening via both the official website and through any RSS podcast client in either WMV or MPEG4.

Cleveland Heights High School (or commonly known as Heights) is the senior high school of the Cleveland Heights-University Heights City School District.

Cleveland Heights High School was founded in 1901. The current student population is more than 1800, with 18 students per full-time teacher.

The school is mostly African-American, with 76% identifying themselves as such, and Caucasian (19%), multiracial (4%) and Asian (1%) minorities.

Heights is known for its athletic teams, which play in Division I.

The school is known for its strong music departments, including the Vocal Music Department (VMD) which include A Cappella, Men's and Woman's Barbershop, Singers, and Men and Women's choruses. There is also a Gospel Choir which is an extracurricular group. The Instrumental Music Department (IMD) consists of the well respected Heights High Symphony, Symphonic Winds, Symphonic Band, Concert Band, Concert Orchestra, Marching Band, Jazz Lab, and Jazz Band. During the 1960 and 1970s, Heights High's music programs were nationally renowned with the Choir and Orchestra considered amongst the best in the country. For a number of years, world renowned musicians performed with the Orchestra and the Heights Band & Orchestra Parents organization and Heights Choir Parents Organization played a major role in promoting music and making Heights High synonymous with the highest quality music. Recently, the Heights High Symphony, Symphonic Winds and Jazz Ensemble competed in the 2007 Heritage Festival in Chicago, Illinois culminating at an award ceremony at Medieval Times where the Symphony Orchestra, as well as the Jazz Ensemble received Gold (or Superior) ratings.

Mr g is a novel by Alan Lightman. Narrated by God as he describes the process of creation.

Jonah Takalua is one of three main fictional characters on the Australian mockumentary series Summer Heights High played by Chris Lilley. Jonah is the only one of the three main characters in Summer Heights High to debut in the mockumentary, with Ja'mie and Mr. G appearing in Chris Lilley's previous television projects. Sydney Morning Herald television critic Michael Idato writes that "Jonah Takalua is well on the way to becoming the voice of his generation."

In writing Summer Heights High, Lilley decided to base around three key characters (all portrayed by him) through whom he could examine three different experiences of high school, that of the schoolboy, that of the schoolgirl and that of the teacher. He created Jonah to explore the world of the male student, with the character's delinquent, disruptive personality arising from Lilley's desire to play a character very different from himself and the person he had been at high school. In order to develop the character's voice and mannerisms, he met and interviewed Pacific Islander children and "just naughty teenage boys", studying their behaviour and speech patterns. "Chris goes out and meets people his characters are like and he makes studies of them, takes notes or interviews people and sometimes films them. He watches those videos over and over and over," says Ryan Shelton, who collaborated with Lilley on his first series, We Can Be Heroes: Finding The Australian of the Year.

Ja'mie Louise King ( /dʒəˈmeɪ/ jə-MAY) is a fictitious character from Australian comedy series We Can Be Heroes: Finding The Australian of the Year and Summer Heights High portrayed by actor Chris Lilley. According to both shows the character of Ja'mie is aged 16 and lives in Kirribilli in the North Shore of Sydney, New South Wales, but was born in South Africa. Chris Lilley has performed as this character outside of television, notably on Australian radio's Triple J Today Today show, and has presented an ARIA Award in character.

Lilley portrays Ja'mie as the stunning but atrocious, narcissistic and callous high school girl in Year 11 at Hilford Girls' Grammar School, a fictional private school on Sydney's North Shore. The character was developed by Lilley with the assistance of comedian Ryan Shelton. Lilley developed the characters mannerisms by using recorded interviews with private schoolgirls and also eavesdropping. Lilley states that he didn't want teenage girls to watch it and think "that's such an older guy's view of teenagers".