Regarding the Tile Mural idea I have once done such works with very much
fewer students though. We did tiles from coils and put them together to
make an abstract design. It actually came out very well and has been on the
wall in the school, where I worked for a week that time, for years now and
I still get some nice comments on it.
In a childrenīs art school in Finland I once visited the students made a
Tile Mural that was put on the outside of the school. It was an ocean
scene. The middle four or nine tiles were obviously worked together but
after that just all kinds of ocean things on each tile. The background
colour was the same for all of them and this made a really beautiful mural.
I must say I really like the quilt tile mural idea!
Best regards from the far north.