I find it interesting how being a valedictorian can mean different things. In Australia, it can be awarded to a student who contributed the most instead. 
That"s very interesting! In America it is whoever has the best grades
That's right! And either way they usually give a valedictory address saying farewell to their classmates. 
Yeah. In my school there was a male and a female one. Do they do that in Australia?
I'm actually not sure. I just know that the traditions that deal with academic graduations differ around the world. 
Do you know of any other differences?
Academic graduation by country
The procedures and traditions surrounding academic graduation ceremonies differ around the world.
India.
In India the graduation ceremony is commonly known as convocation. At the universities and institutes, the graduation ceremonies are formal affairs, which include an academic procession by both the academic heads and the students. The students usually get dressed up in a formal attire, wear an form of academic dress - usually a gown that is worn open in the front, sometimes accompanied by a square hat. They will have a
a way to end the show to be with Shari. When Ed exits, one cameraman stays with Shari saying that it is the producers' new idea. The main cameraman tells him that all his family are being filmed, but they show the most interesting person, thus eliminating his family's right to privacy forever.
Ed gets an idea on how to stop the main producer from showing the show: he says that he will give $10,000 to the person who can give him the best amount of "dirt"