In 2006, HAF was actively involved in the Californian Hindu textbook controversy. On March 16, 2006, it filed a lawsuit contesting the California's Curriculum Commission's decision to reject many of the Vedic Foundation and Hindu Education Foundation's suggested edits to California's textbook curriculum on Hinduism and India. The proposed changes had been publicly opposed by Indologists organized by Michael Witzel, who renounced them as "politically and religiously motivated", as well as by various Hindu groups. The court ruled to retain the textbooks, noting the significant expense associated with reissuing the textbooks.