Chee Seng and Tracy

The similitudes of Chee Seng and Tracy: the main similarity is that their fathers leaves them and then begin the problems with the alcohol, drugs, weed and exams worse. Another coincidence was they weren't popular but they liked and neither best friends it was. And the last coincidence was that their mothers tried to help them.

                                                        

The differences: In the end of the book, Chee Seng's mother was in hospital and in film Tracy discovers that her best friends betrays her.