Per the Judge's Addendum:
Two adults (18+ years old) who are not team members must be present for the duration of the session. These adults include: o One adult must be the Event Partner or an event administrator. o The other adult must be the team’s Primary Contact as listed in RobotEvents.com or designee. If the team is using an adult designee, the team’s Primary Contact must provide the name, email address, and phone number of the designee to the Event Partner prior to the session or by the deadline provided by the Event Partner.
Since VEX U students are themselves considered adults, do they need to have another adult that is not a team member be present? Some VEX U teams will not even have an adult mentor or coach associated with the team.