HELP ME FIND THE NAME OF THIS MOVIE

I remember seeing this movie in late 2000s when I was still a kid and it has been driving me crazy for the past few years – so please help me find the name of this movie.

I can 3 major scenes:

1. The nerdy girl transfers to a new school? Another girl gives her a tour of the school and shows her where each clique hangs out. She takes the new girl to an empty skatepark where a few other girls are hanging out. The nerdy girl befriends them and starts changing.

2. The nerdy girl loves baby ducks. One day in the school lab they are asked to do experiments on a baby duck so she pretends that it is a mango/orange that she is cutting up. Weird, I know.

3. All the girls kiss random guys. The nerdy girl, who is a whole new person at this point, is kissing this random guy and he has food in his mouth/bracelets so she suddenly stops but then keeps on kissing. She and her mom fight.

I know this doesn’t make any sense but for some reason I cannot erase these images from my mind and I HAVE to know the name. I hope someone can help me.