Why not start a joint venture between your school and one in New Caledonia or France and base it around WW1 commemorations? Here's a link to an article that was recently published in the Education Gazette calling for NZ schools to join the Shared Histories project which is an initiative from the French Embassy.
Your project can be as small or large as you and your school like. There is no obligation to travel to see your partner school although that is very welcome if it works for both parties.
Be in touch if you'd like support getting involved in this project.