Making friends

There are seven rankings to this school:
1-2: Yellow Lion
3-4: Green Lion
5-6: Blue Lion
7-8: Red Lion
9-10: Black Lion
11-12: Purple Lion (Teachers)
13-14: Silver Lion (Headmasters)

The only rule in this school: follow the lead. Make sure it's followed, but four students almost break that rule. Costing them their place at Voltron Academy.