REQUEST FOR IDEAS: Virtual Graduation Ceremony for High Schools / Colleges using Game Engine

I work for a school district in Houston, Texas. We have 12 high schools.  I'm not a game developer.

I'm exploring the ideas of whether a “game” could be created quickly that would allow a virtual graduation ceremony to be held for each school.

My early thoughts are:

1.  player/graduate would log in to specific school “game” to load cap/gown colors and school logos
2.  player/graduate would choose appropriate avatar (male/female/hair color, etc.)
3.  player/graduate would upload photo for mapping face to avatar

game play would be automatic - very little player interaction:

1. avatars would walk …