This paper profiles the student subgroup achievement and gap trends in Iowa for 2010. In grade 8 (the only grade in which subgroup trends were analyzed by achievement level), Iowa had data for racial/ethnic subgroups, low income students, and boys and girls at the proficient and advanced levels. Trends at the proficient and advanced levels were upward for must subgroups, with just a few exceptions. Progress was made in narrowing achievement gaps between all subgroups. Comparable data were available from 2004 through 2009, and from 2005 through 2009 for the grade 8 achievement levels. (Contains 9 tables.) [For the main report, "State Test Score Trends through 2008-09, Part 2: Slow and Uneven Progress in Narrowing Gaps", see ED513914.]