Katherine Long:

The Washington State Court of Appeals has reversed an earlier decision in King County Superior Court that found Seattle’s choice of a new high-school math series was arbitrary and capricious.
The appellate court found no basis for the Superior Court’s conclusion in February 2010 that the Seattle School board “was willful and unreasoning in coming to its decision” when it chose the Discovering Math series of textbooks for algebra and geometry in high school math.
The school district has been using the series since the start of the 2009 school year.
Some parents have criticized the Discovering Math series, saying it is inferior to other series and that its emphasis on verbal descriptions makes it difficult for some students to understand, especially those for whom English is a second language.

Much more on the Seattle Discovery Math lawsuit, here.