New CABL Study Shows Benefits for High School Students Associated with LA 4 Pre-K Program

Although decades of research has shown that high-quality preschool education could have a significant impact on school readiness and student achievement in the early years, less was known about the possible benefits through high school. A new CABL study provides the first-ever set of findings that a statewide public Pre-K program can help promote long-term benefits for students beyond the elementary and middle school grades.

The findings are from the LA 4 Longitudinal High School Outcomes Study produced by a nationally-recognized team of experts on early education and published by CABL.

“The LA 4 High School Longitudinal Study is the first I know of to show that a high-quality year of public Pre-K continues to be associated with multiple important real-world outcomes,” said Dr. Craig Ramey, Professor of Pediatrics, Psychology, Neuroscience, and Human Development at Virginia Tech.

“This study is really impressive because there is such a consistent pattern of good news, year after year, about improved academic achievement in the children who received LA 4,” said Dr. Sharon Ramey, a Professor of Psychiatry, Psychology, Neuroscience, and Human Development at Virginia Tech.

Broadly, the research found positive long-term benefits associated with participation in LA 4 compared to students with no access to publicly-funded Pre-K.

  • LA 4 children consistently outperformed other children on statewide education tests in most subjects at 4th and 8th grade and also in high school.
  • LA 4 students earned higher ACT scores and more were eligible for all levels of the TOPS scholarship program.
  • Eighty-eight percent of the LA 4 children graduated from high school, a rate that exceeds the state average graduation rate of 78.9 % for those same years.
  • LA 4 children were approximately 45% less likely to be placed in special education programs.

All students, regardless of race or gender, showed these long-term benefits associated with participation in LA 4.

The study used data provided by the Louisiana Department of Education to measure the academic performance of more than 40,000 students, including the first three cohorts of the LA 4 Pre-K program for four-year-olds. The LA 4 students were compared to students who entered the same kindergarten in the same year, but did not receive any form of publicly-funded Pre-K. All were eligible for free and reduced meals.

Previous studies had followed these students through eighth grade and found that students receiving LA 4 related to measurable and enduring positive outcomes.  But little was known about whether the benefits associated with the program continued beyond middle school and through high school.

The new Louisiana report is significant on two fronts:

  1. The goal of most four-year-old Pre-K programs is to better prepare children for kindergarten and the early grades of school. Because of that, most studies have looked at only the short-term impacts and have not followed the progress of children as they move past middle school. This statewide study is unique in following all students through the end of high school.
  2. Unlike most studies on the impact of Pre-K that rely on relatively small samples of students in just a few schools or districts, this study is a true population study with a very large number of students, and three consecutive cohorts of students to determine whether the same effects occur year after year.

It should be noted that economically-disadvantaged children in the LA 4 program still performed lower than statewide averages for all students. But this study suggests that Louisiana’s focus on early education should remain a top policy priority and one Louisiana should continue and enhance.

“The report mentions that perhaps even greater school success might be realized if investment in early learning began in the first three years of life,” said Dr. Craig Ramey. “The scientific evidence definitely supports this idea of expanding early learning opportunities for even younger children whose families and communities lack the resources to provide these.”

Research Team:

Dr. Gary Asmus, Lead Statistician and Major Study Author

Dr. Billy Stokes, former Director, Cecil J. Picard Center for Child Development at UL Lafayette

Dr. Craig Ramey, Professor of Pediatrics, Psychology, Neuroscience, and Human Development, Virginia Tech

Dr. Sharon Ramey, Professor of Psychiatry, Psychology, Neuroscience, and Human Development, Virginia Tech


Support for this work was provided by the Rockhold Family Foundation.

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