The NASA Web site has an excellent article about the ARISS program.
You can read it at:
In Canada, the Sponsors are the Canadian Space Agency, Radio Amateurs
of Canada and AMSAT. Since the start of the program, there have been
21 Canadian schools that had a contact with an astronaut aboard the
International Space Station and we have another 11 waiting for their
turn to come up.
If you know of a school interested with this adventure, refer them to
me and we will take it from there.
Daniel Lamoureux, VE2KA
Vice President International Affairs,
Radio Amateurs of Canada