This year the Center on Education Policy (CEP) analyzed data on the achievement of different groups of students in two distinct ways. First, it looked at grade 4 test results to determine whether the performance of various groups improved at three achievement levels--basic and above, proficient and above, and advanced. Second, it looked at gaps between these groups at the proficient level across three grades (grade 4, grade 8 in most cases, and a high school grade). These two types of analyses show whether elementary school achievement has generally gone up for different groups of students and whether achievement gaps at different grade levels have narrowed, widened, or stayed the same. This paper profiles the student subgroup achievement and gap trends in New Mexico. Grade 4 achievement trends at the proficient level showed a mixed picture for New Mexico's major student groups. Declines were more prevalent than gains in reading, while gains were more common than declines in math. Trends in achievement gaps were also mixed. In reading, gaps narrowed in nearly all cases, but in math the two indicators of achievement used in this study showed contradictory trends. (Contains 9 tables.) [For the main report, "State Test Score Trends through 2007-08, Part 3: Are Achievement Gaps Closing and Is Achievement Rising for All?", see ED507909.]