Iowa Testing Programs develops tests and scoring services used by schools throughout
the world. Test materials and services are marketed and distributed by Houghton Mifflin
Harcourt (Riverside Publishing Company) to all parts of the country except Iowa.
For the Iowa Tests, Iowa schools are served exclusively by Iowa Testing Programs.
Educators and members of the media from outside of Iowa can obtain assistance by
Houghton Mifflin Harcourt at
(800) 323-9540. Parents with questions about interpreting scores from the Iowa Tests
should contact educators in the school in which the testing occurred.
Educators and members of the media from within Iowa can obtain assistance with their
questions by contacting Iowa Testing Programs at (319) 335-5408 or by emailing