Level 3 : Vouching on Mozillians.org
Being vouched on Mozillians.org can be achieved by a Firefox Student Ambassador if they have been awarded the open badge, certificate of identification, and accomplish the following tasks:
1. Completed all five first program steps as outlined at FSA Startup Guide
2. Have already set up a non-vouched account on Mozillians.org
Check following link to know more about this - https://wiki.mozilla.org/StudentAmbassadors/Recognition#Level_3