[tag=POS] [word=drug] [tag=NN] [□]
[tag=POS] [word=drug] [tag=NN] [□=□]
[tag=POS] [word=drug] [tag=NN] [□ & □]
With the help of the American Civil Liberties Union ( ACLU ) , Lindsay set out to fight her school 's drug testing policy on the basis that it was an invasion of her Fourth Amendment rights .