Here's another non-profit that they created in London, with a somewhat similar mission, but as you can see, the logo is very London, and wouldn't fit California culture.
Besides the information I've stated in the first email, the key would be to create a logo that appeals to potential business sponsors/donors, as well as students and public education. They are pretty open to logo designs, not necessarily looking for a certain thing, except to keep it more contemporary, and less classic, as opposed to GYN's logo.
Global Youth Network - http://globalyouth.org.uk/
Give it a try, as this is a real-world project where students can flex their creativity, alas there isn't a lot of time, but sometimes in the real-world, deadlines and working under pressure, brings out the best.
Thank you and good luck!