Below are four documents obtained by the Bay Area News Group from the Moraga School District through a Public Records Act request. They detail unnamed students' abuse reports from the 1990s to Bill Walters, then the principal of Joaquin Moraga Intermediate School, and his failure to report them to authorities.Shortly after the district handed over the documents to BANG, Walters, a principal at a Moraga elementary school, announced his retirement at the end of the school year.