Great Valley Academy Principal Russell Howell gave fair warning to staff and parents several months ago about the anticipated results of the 2012 California STAR Testing.“Whether high, low, or somewhere in between, would represent our baseline,” the principal noted in his e-mail messages to all the people concerned.But as it turned out, Great Valley’s principal, teachers, parents, and students have every reason to celebrate. On the very first year that the charter school opened in Manteca, they hit the 800 mark in the STAR testing.That prompted another e-mail message from the principal to everyone. This time, the message was celebratory.“Those of you who receive the Manteca Bulletin likely read the front page article today regarding the school API scores.