What is it called when you achieve the highest GPA in high school?

There isn't one specific, universally recognized title for achieving the highest GPA in high school. Schools might use different terms, such as Valedictorian (often, but not always, the student with the highest GPA), Salutatorian (second highest GPA), or simply acknowledge the student with the highest GPA in a graduation ceremony or yearbook. Some schools might not formally recognize it at all.