TubeNet

Hello everyone out there.

I have a group of 4 tubas that I am trying to get to learn how to play more as a group then individuals. I am going to have them play in a quartet, they are young high school players and I was wondering what pieces we have floating out there that I can get that won't be too hard for them to play that is written for 4 tubas, not 2 tubas and 2 euphs. Thanks in advance

Uber!

That's a difficult instrumentation, not only for the range, but for the experience level of the kids.
What I would recommend is chorales - you will probably have to arrange them yourself.
Take a chorale melody - use a hymnal. Transpose it to a reasonable range for the kids who are playing. Place tha bass line about an octave below the melody. Fill in the inner voices - closed spacin, inner voices can cross, but keep the melody intact.
That will give them something to play that wil fit your stated goals.
PS - do it in Finale or another notation program, unless you happen to be a gifted hand-copyist.

Why not have them read the euph parts an octave down (assuming they are bass clef, not so hard)? Or Klaus (TubeNet user name imperialbari) has many arrangements on his site.

You could always look up and arrange a Bach Chorale, those can be pretty simple and easy to play...