Two students and their parents have sued the Ann Arbor (Mich.) school district in an effort to stop it from charging tuition for so-called "seventh-hour" classes. AnnArbor.com says the district has decided to impose a $100-a-semester fee on high school students taking a seventh class in 2013-14. The board approved the fee as it tried to eliminate an $8.7 million budget deficit. The American Civil Liberties Union of Michigan filed the lawsuit on behalf of Paloma Paez-Coombe, a 16-year-old junior at Pioneer High School, and Elliot Polot, a 17-year-old senior at Pioneer. The suit contends that nearly half of the students at Pioneer and Huron high schools need to take seventh-hour classes to obtain enough credits to graduate, while also participating in music, art, foreign language, advanced placement courses and alternative career programs.