Number Worlds
Implementation Study

To be eligible for this research study, your district must:

• Commit to implementing Number Worlds with fidelity in grades K–8. 
  • Fidelity requirements:
    • Teachers have been trained and (internal or external) support/coaching is ongoing;
    • Placement tests are administered at the beginning of the year;
    • Adequate time allotted for lessons each day (varies by content and grade level);
    • Lesson progress is being made (about 4-5 lessons per week);
    • Assessments must be used and data entered into the platform; 
    • Remedy lessons/exercises are implemented as recommended.  
       
• Provide access to available de-identified student-level data from benchmark assessments (e.g., iReady, NWEA MAP, or similar) for participating students for 2025–2026 and 2026–2027 for analysis and inclusion in a written report—approximately 2–3 hours total.
  
  
• Provide access to available de-identified student-level data from state summative assessments for participating students for 2025–2026 and 2026–2027 for analysis and inclusion in a written report—approximately 2–3 hours total.