Evidence Base
Each of the Too Good programs has undergone rigorous, independent evaluation studies to measure effects on students' skills, attitudes, intentions, and behaviors. Studies have been published in peer-reviewed journals and presented at national research conferences. These studies demonstrate the effectiveness of Too Good.
Evaluation Studies
The evaluation studies presented here were conducted by third-party researchers using randomized treatment-control group designs, including pre-test/post-test, 20-week post-test, and one-year follow-up designs. Researchers examined equivalence between treatment and control groups, potential bias caused by the loss of student data over time, quality of program implementation, and the reliability and validity of assessment tools.
Too Good for Drugs / Maximizing Life
2001 Summary
2001 Full Report
Too Good for Violence / A Peaceable Place
2003 Summary
2003 Full Report
Too Good for Drugs / Maximizing Life
Too Good for Drugs / Maximizing Life
2004 Summary
2004 Full Report
Too Good for Drugs / Maximizing Life
Too Good for Violence / A Peaceable Place
Too Good for Drugs / Maximizing Life
Maximizing Life and A Peaceable Place
Too Good for Drugs / Maximizing Life
Too Good OST
Quality Assurance Reports
As part of its ongoing quality assurance program, the Mendez Foundation collects data from direct-service implementations to monitor trends in student outcomes. These findings inform program development, updates, and revisions.
Below is a sampling of these quality assurance reports. This section is updated as new data becomes available.
Case Studies
Our evidence base continues to grow through ongoing data collection from program implementations in schools and communities.
These case studies examine how Too Good programs are delivered in real-world settings. Together, they provide practical insight into program implementation and the results achieved across diverse populations and learning environments.
Registry Placement
| Organization/Agency | TGFD | TGFV | TGFDV |
|---|---|---|---|
| NREPP: National Registry of Evidence-Based Programs & Practices | Reviewed evaluation | Reviewed evaluation | Reviewed evaluation |
| Promising Practices Network: Programs that Work | Screened program | Screened program | Screened program |
| SAMHSA: Substance Abuse & Mental Health Services Administration | Model program | Model program | Model program |
| What Works Clearinghouse: U.S. Department of Education, Institute of Education Sciences | Positive effects on behavior | Positive effects on behavior, knowledge, attitudes, and values | Positive effects on behavior, knowledge, attitudes, and values |
| CEBC: California Evidence-Based Clearinghouse for Child Welfare |
TGFD Grade 6 Scientific Rating 2 — Supported by Evidence |
Not Yet Rated | Not Yet Rated |
| CASEL: Collaborative for Academic, Social, and Emotional Learning | Not Yet Rated | Elementary SELect Program | Not Yet Rated |