MADELINE: Hey Paris. Louise hates you.
PARIS: You’ll thank me when you get into Sarah Lawrence.
LOUISE: Wanna bet?
Sarah Lawrence College is a private liberal arts college in the city of Yonkers, New York. It was founded in 1926 as a women’s college, but became co-educational in 1968. Sarah Lawrence is known for its highly individualised course of study modelled on the Oxford/Cambridge system of one-on-one tutoring, and places a high value on independent study. It also has a history of political activism and volunteering, and is considered to be one of the most progressive colleges when it comes to social causes. It is also one of the most expensive colleges to attend.
It is not clear from Paris’ statement whether Louise is hoping to get into Sarah Lawrence, or whether it’s where Paris thinks she should apply, in the same way she told Rory she should go to Brandeis. Louise’s reply suggests it’s not her preferred option, but she may just be cranky about coming to school on a weekend.