If someone has a high school diploma from Cornerstone Correspondence School will the police academy accept it?

It is highly unlikely that a police academy will accept a high school diploma from Cornerstone Correspondence School. Most police academies require applicants to have a high school diploma or General Educational Development (GED) certificate from an accredited institution. Cornerstone Correspondence School is not an accredited institution, so it is unlikely that its diplomas will be accepted by police academies.