Valeris was mentored by Captain Spock at Starfleet Academy, and became the first Vulcan to graduate at the top of her class. Spock took interest in her career with "satisfaction" as she eventually attained the rank of lieutenant. Valeris requested to be assigned to the Enterprise-A upon learning of their need for a helmsman. Spock, having been impressed with her, informed her of his intentions to retire subsequent to the completion of their diplomatic mission, and of his desire that she should fulfill his role aboard the ship.