Read his classic book Origins and Ideas of the Modern School by Francisco Ferrer. Some teenage critique of school. Very interesting, funny in places, and worth a hearing. Funny, teenager oriented site. This has an unusual collection of news photos of teachers protesting around the world, and news related to teacher activism.
SIte is in English.
Site dedicated to Freire. Site is mostly in Portuguese. Easy if you know Spanish. Easier if you know Portuguese. News, Thought, and Analysis Z Magazine on the internet.