I'm the coordinator of the project Abacus (see http://abacus.aalto.fi) Chris mentioned.
At the moment, answer to your question is a kind of "yes and no". In principle, Abacus is open for anyone who is interested and makes a collaboration proposal that is sensible for us to accept. But, on the other hand, the consortium works in the way that it is not very practical for schools to join.
On the other hand, there are several high schools in Finland that have expressed interest to join the project and actually we are already working to solve the mentioned practical problems.
If the things go really well, the formal solution could be ready in about 2-3 weeks. Probably it will take a bit longer.