In grade 8 (the only grade in which subgroup trends were analyzed by achievement level), Colorado students showed gains in reading at the proficient level for racial/ethnic subgroups, low income students, and boys and girls. There were slight declines or flat trends for almost all subgroups at the advanced level in reading. In math, gains were shown for all subgroups in grade 8. Comparable data were available from 2002 through 2009. Because of the way the state defines achievement levels, we could not calculate percentages of students at the basic achievement level. Progress has also been made in narrowing achievement gaps in both reading and math between racial/ethnic subgroups, and between low income and non-low income students, with some exceptions. (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. For the 2009 Colorado report, see ED507935.]