Ma, X. (2005). Early acceleration of students in mathematics: Does it promote growth and stability of growth in achievement across mathematical areas? Contemporary Educational Psychology, 30(4), 439-460.
This study looked at mathematical achievement of accelerated and non-accelerated students from seventh through twelfth grade. The objective of this study was to determine whether early acceleration into formal algebra promoted significant academic growth and balanced academic development throughout the secondary school years. The author used hierarchical linear modeling to analyze results from the Longitudinal Study of American Youth. Students were grouped as high- or low-achieving based on their performance on seventh grade math tests. The same students were then grouped based on their access to acceleration in mathematics. Students who took Algebra I in seventh or eighth grade were defined as accelerated in mathematics.
Students who were accelerated into formal algebra at the beginning of middle school grew more quickly in basic skills, algebra, geometry, and quantitative literacy than students who were not accelerated. Student and school characteristics did not significantly impact the rates of growth. Interestingly, students who had low initial mathematics achievement showed higher rates of growth than their non-accelerated peers. Initially low-achieving students improved at a faster rate than students who were initially high achievers. However, the author acknowledges a potential “ceiling effect” for high achievers, who may have already learned all of the content in basic skills and quantitative literacy, leaving less room for improvement. As a result, a lack of substantial growth in this group is not an effective argument against acceleration for high-achieving students.
The results suggest that the challenge of more advanced mathematical problems in formal algebra motivates students and prevents boredom. Students who were initially high achievers and those who were initially low achievers both improved their mathematical skills at a higher rate than their non-accelerated peers. Early acceleration in mathematics was not found to decrease the stability in development of basic skills, algebra, geometry, or quantitative literacy in either group.