Errors in Pearson's LA curriculum

...Also, California education officials have only approved Pearson’s math courses for grades Kindergarten through eighth grade. And the state found errors in every grade, from simple problems, like typos, to bigger issues, like learning standards that were not correctly applied...

http://www.scpr.org/blogs/education/2014/08/25/17192/how-did-la-schools-decide-on-ipad-software-it-star/