The Textbook League fought pseudoscience and other idiocy in pre-college textbooks for the last few decades. The human part of the League is disbanding, but stalwart ichthyologist Bill Bennetta is personally keeping their website online: http://www.textbookleague.org . Their reference material remains available even though they no longer send experts galloping to assorted rescues.
Bay Area Skeptics
The San Francisco Bay Area's skeptical organization since 1982