Sub-genre convections

High school drama

Grease

The key plot idea introduced in the title sequence is that

 two young people named Sandy and Danny who had

 a summer Romance. However, they had to be separated 

due to living in different countries but then they ended up in

the same high school. The social groups represented is

stereotypical teens in high school. Also, the characters that

 are introduced are: Sandy,Danny, Marty, Doody and Sunny.

Princess Diaries

 

The key plot idea introduced in the title sequence is that a 

 young, unpopular, shy girl called Mia is seen socially as the

 minority in her school until the arrival of her mysterious  

 grandmother from another country. The social groups that 

are represented are stereotypical american teenagers in High 

School. Moreover, the characters that are introduced are:

Mia, Lily, Josh and Mr'oconnal (teacher).

Youth Drama

Juno

                                                   

The key plot idea introduced in the title sequence is

that a teenage girl gets pregnant by her boyfreind                            The social groups that are represented are: young                         

teenage moms and older people who seem to  be

 judgmental towards the younger generation(stereotype). Furthermore, the characters that are introduced are Juno,

 the shopkeeper and the people inside the shop.

Boyz N the hood

                                         

The key plot idea introduced in the title sequence is how

 young people living in a working class are are affected by violence, gangs and racism. The social groups that are represented are: working class people, Black African American and young people who are stereotyped to be aggressive and violence. The characters introduced are children, parents, teachers and young people.