val·e·dic·to·ri·an 
/ˌvæləˌdɪkˈtorijən/ noun
plural val·e·dic·to·ri·ans /ˌvæləˌdɪkˈtorijən/ noun [count] US : the student who has the highest grades in a graduating class and who gives a speech at graduation ceremonies
▪ She was the valedictorian of her class in 1985. — compare salutatorian
▪ She was the valedictorian of her class in 1985. — compare salutatorian
