House File 272, which would have prevented Iowa from adopting the Next Generation Science Standards, died on March 6, 2015, when a deadline for House bills to be reported out of committee passed.
The bill's lead sponsor Sandy Salmon (R-District 63) told the Cedar Rapids Gazette (March 2, 2015) that the treatment of evolution and climate change in the standards was in part responsible for her opposition.
A lead state partner in the development of the NGSS, Iowa is currently considering whether to adopt the standards. After public comments are reviewed, the state board of education will decide whether to adopt the standards.