Scholars are anyone who attends collegial studies, both slow and astute. valedictorian is literally a student, typically having the highest academic achievements of the class, .... delivers the valedictory at a graduation ceremony. Doctor is too . "Those students who are fastidious, shrewd, and sagacious, develop the perspicacity required to deliver perspicuity
'Scholar' is a noun that would best describe a person who is an 'effective learner'. A scholar can also be a person who has done advanced study in any special field like medicine or electrical engineer.