"Thousands of teachers are saddled with error-filled physical science textbooks that fail to present what science is all about..."
John Hubisz in "Middle-School Texts Don't Make the Grade"
Physics Today, May 2003, pp 50-54
"Not one of the books we reviewed reached a level that we could call "scientifically accurate" as far as the physical science contained therein. The sheer number of errors precludes such a designation...Many of the obvious errors could be easily corrected, but the subtle errors (including misuse of technical words or phrases, the promulgation of ideas not validated by scientists, and promotion of "politically correct" views) that would leave incorrect implications would be more difficult to root out."
From the full report on middle school texts