Data from the NAEP (National Assessment of Educational Progress) 1998 Reading Report Card show increased scores for low-performing students in the 4th and 8th grades in 1998 as compared to 1994, but no change at the 12th grade. Scores for low-performing students in the 8th grade were higher in 1998 than in either 1994 or 1992. Scores for low-performing 4th graders were higher in 1998 than in 1994, but no higher than in 1992. Scores for the lowest-performing 12th graders were lower in 1998 than in 1992. (Contains 6 figures of data and 5 endnotes.) (Author/RS)