Voting System for Website Challenge

Our club has entered the EMC Robotics Club/Team Website Challenge and we were wondering how the six finalists are chosen from the votes provided (not the four chosen by EMC and RECF).

Would the six teams with the highest scores (percentages) be the finalists or does the amount of votes play a role in which six teams are chosen as finalists?

One would at first think that the six teams with the highest percentages are chosen as finalists, but that seems too simple. If this were the case, a team with one 100% vote would beat a team with twenty votes that average at 90%, which seems unfair. So, how are the votes counted up to determine the six finalists?