It was great for me that you can volunteer for a short time, because I wasn’t able to spend longer than one month, but I would suggest that people try to stay for at least a few months to allow enough time to develop a good relationship with children and teachers in the schools you serve. I really liked the fact that there is no fee to volunteer – this is a non-profit organization that runs on a very limited income. The cost of living with a family is very reasonable and a great experience that helped me improve my Spanish.  I really enjoyed an opportunity to teach adults and it would be great if 12Tree would be able to offer more classes for adults.