"After a careful and thorough investigation, the team of experienced federal prosecutors and FBI agents determined that the evidence was insufficient to prove, beyond a reasonable doubt, that Fields willfully deprived the Spring Valley High School student of a constitutional right," according to a statement released by the Department of Justice Friday. "This decision is limited strictly to an application of the high legal standard required to prosecute the case under the federal civil rights statute; it does not reflect an assessment of any other aspect of the incident involving Fields and the Spring Valley High School student."