The evaluation of the EB4K program has been ongoing since the 2008-09 academic year in schools across Missouri, Kansas and Iowa. In the 2011-12 academic year, the program and evaluation were expanded to schools in the West Contra Costa Unified School District located in the East Bay of San Francisco. The evaluation was designed to utilize the most rigorous methodology for this population and to assess not only outcome measures but process measures as well with minimal measurement error. It further includes mixed methods research, combining the strengths of quantitative research and qualitative research. The interventionists continually improve the programming and outcomes based on the findings from the process and outcome evaluation.

Among the evaluation findings, students from the intervention schools compared to students from the control schools at the completion of the program have significantly increased their nutrition knowledge and improved their attitudes about school lunch. Further, when cafeteria behaviors were observed, vegetable intake significantly increased among the students from the intervention school after the program compared to the students from the control schools. Screen time has also been found to decrease significantly among the students from the intervention schools compared to those from the control schools after the program.