Volunteering in Granada

I would like to volunteer in Granada teaching children. Does anyone know of any organisations I can do this with? (without having to pay to volunteer!)

Check out www.la-esperanza-granada.org It is the most established, best run volunteer org in Granada

I will second the advice in #1.
I haven't volunteered with them so it's not first-hand but I did do a walking tour with them and was impressed at how transparent their are with their financials and they do monthly news updates via email detailing every penny and material item donated.

Thank you! From their website they do look really good.