ESSA Evidence Tier Calculator
Determine your evaluation's evidence tier under ESSA requirements
Study Design
What type of research design does your evaluation use?
RCTs provide the strongest evidence. QEDs can qualify for Tier 2 with proper controls.
ESSA Evidence Tier Framework
Strong Evidence
Well-designed RCT, large multi-site sample, meets WWC without reservations
Moderate Evidence
RCT or QED with comparison, adequate sample, meets WWC
Promising Evidence
Correlational+ study with statistical controls, validated outcomes
Demonstrates a Rationale
Research-based rationale with ongoing evaluation
Complete the form to calculate your ESSA evidence tier
Start with Study Design
About ESSA Evidence Tiers
The Every Student Succeeds Act (ESSA) established four tiers of evidence to help districts and schools identify programs and practices with proven effectiveness.
Many federal grants (Title I, Title II, Title IV, 21st CCLC) require or incentivize evidence-based interventions. Higher tiers often receive priority for competitive grant funding.
Key resources: What Works Clearinghouse (WWC), ESSA Evidence Tiers guidance from the U.S. Department of Education.