A Wisconsin-based anti-religion group has challenged the constitutionality of the Dawson County school system accepting faith-based course credits from a new local Christian learning center. In a letter dated Jan. 9, the Freedom from Religion Foundation demands that the school board sever its ties with Dawson County Christian Learning Center. The foundation, which calls itself “a national watchdog” that promotes the constitutional principle of separation between church and state, is the nation’s largest association of freethinkers (atheists, agnostics and skeptics), according to its website.