High Quality Content by WIKIPEDIA articles! Academic Freedom bills are a series of antievolution bills introduced in state legislatures in the United States between 2004 and 2009. They assert that teachers, students, and college professors face intimidation and retaliation when discussing scientific criticisms of evolution, and therefore require protection. Critics of the bills assert that there are no credible scientific critiques of evolution. An investigation in Florida of allegations of intimidation and retaliation found no evidence that it had occurred.