Critics including Peter Dreier of Occidental College—who is listed on the site for having criticized the National Rifle Association and using Howard Zinn's A People's History of the United States as a required text—have pointed out errors of fact that may make Professor Watchlist less than reliable as a source of information. Dreier's entry formerly listed him as a former employee of the Industrial Areas Foundation and as the man who inspired college student Barack Obama to become a community organizer. Dreier identifies these claims about him as "complete fantasy". He also noted elements of his biography that the website completely omitted, such as his work with labor unions, his activism in favor of a minimum wage, and the books he wrote.
