Over the years, Saratoga High School has tried to curb its competitive culture. The school does not publish an honor roll. It has slashed homework over breaks. It releases grade-point averages to students only on request. Yet, teachers say, too many students remain obsessed with their grades.So in another attempt to ease the pressure, Saratoga High announced it would change the way it chooses class valedictorians and salutatorians to allow more students to be honored. The announcement kicked off a furor in this affluent, well-educated community, with many fearful the school's highest achievers would be robbed of their due.Anxiety in...