In grade 8 (the only grade in which subgroup trends were analyzed by achievement level), Illinois students showed mostly gains in both reading and math at the basic, proficient, and advanced levels for racial/ethnic subgroups, low income students, and boys and girls. There was mixed progress made in narrowing achievement gaps in reading and math between racial/ethnic subgroups, and between low income and non-low income students. There were instances of gaps narrowing as well as widening at various grade/subject combinations. Comparable data were available from 2006 through 2009. (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 Illinois report, see ED507944.]