If non-static method can be static without any bad impact on code?
class student{

    public static function getStudentName($studentID){
             ....
             return $studentName;

    }

}

$stuName = student::getStudentName($stuID)

$instance = student::find($id);
$name = $instance->name();

$name = student::find_and_return_the_name($id);