Propensity score matching was used to compare third-grade test scores in English language arts, mathematics, science, and social studies for children who had and had not participated in Georgia's Pre-K 4 years earlier. After matching, each group included 46,262 children (mean age 8.36 years in third grade). In all subject areas, children who had…

Success in ninth grade is essential to a student's success throughout high school. Many high schools retain the traditional science course sequence of teaching biology first to ninth graders who may or may not be cognitively ready for today's biology content. A few school districts in Georgia are offering a flexible science course sequence in the…

Prediction of academic success at postsecondary institutions is an enduring issue for educational psychology. Traditional measures of high-school grade point average and high-stakes entrance examinations are valid predictors, especially of 1st-year college grades, yet a large amount of individual-differences variance remains unaccounted for.…

Low high school graduation rates continue to be a challenge in American public education. The pressure to meet the demands of adequate yearly progress (AYP) under the No Child Left behind Act of 2001 has led to an achievement gap in student performance between science and other core subjects, namely English, math, and social studies, on the…