I have a project for high-schools which is called "Translator's corner". Schoolchildren translate from other languages one part of different articles. It's like a competition who will translate more. So there I count the translations via bytes and it stimulates them. They do everything in order their bytes chould grow higher. Here is the
link of my project but it's in Armenian. You can see the bytes of the schoolchildren.
P.S. Will you please tell me a bit more of your project? Sorry if I have missed something. I'm new in this mailing list, may be you have already told.