Salutatorian

 
Wikipedia: Salutatorian
Salutatorian is an academic title given in Armenia, the Philippines, Canada, Afghanistan and the United States to the second-highest-ranked graduate of the entire graduating class of a specific discipline. Only the valedictorian is ranked higher. This honor is traditionally based on grade point average (GPA) and number of credits taken, but consideration may also be given to other factors such as co-curricular and extracurricular activities. The title comes from the salutatorian’s traditional role as the first speaker at a graduation ceremony, delivering the salutation (where the valedictorian, on the other hand, speaks last, delivering the valediction).
 
Merriam-Webster Dictionary
salutatorian
noun
sa·​lu·​ta·​to·​ri·​an sə-ˌlü-tə-ˈtȯr-ē-ən
: the student usually having the second highest rank in a graduating class who delivers the salutatory address at the commencement exercises
First Known Use
circa 1847, in the meaning defined above