1. Arts participation

    Low impact for low cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  2. Aspiration interventions

    Very low or no impact for moderate cost based on very limited evidence.

    Cost
    Evidence Strength
    Months Impact
    0
  3. Behaviour interventions

    Moderate impact for moderate cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +4
  4. Block scheduling

    Very low or no impact for very low or no cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    0
  5. Collaborative learning

    Moderate impact for very low cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  6. Digital technology

    Moderate impact for moderate cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +4
  7. Early years intervention

    Moderate impact for very high costs, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  8. Extending school time

    Low impact for moderate cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  9. Feedback

    High impact for very low cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +8
  10. Homework (Primary)

    Low impact for very low or no cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  11. Homework (Secondary)

    Moderate impact for very low or no cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  12. Individualised instruction

    Low impact for very low cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  13. Learning styles

    Low impact for very low cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  14. Mastery learning

    Moderate impact for very low cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  15. Mentoring

    Low impact for moderate cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +1
  16. Meta-cognition and self-regulation

    High impact for very low cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +8
  17. One to one tuition

    Moderate impact for high cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  18. Oral language interventions

    Moderate impact for very low cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  19. Outdoor adventure learning

    Moderate impact for moderate cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +3
  20. Parental involvement

    Moderate impact for moderate cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +3
  21. Peer tutoring

    Moderate impact for very low cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  22. Performance pay

    Very low or no impact for low cost, based on very limited evidence.

    Cost
    Evidence Strength
    Months Impact
    0
  23. Phonics

    Moderate impact for very low cost, based on very extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +4
  24. Physical environment

    Very low or no impact for low cost based on very limited evidence.

    Cost
    Evidence Strength
    Months Impact
    0
  25. Reading comprehension strategies

    Moderate impact for very low cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +5
  26. Reducing class size

    Moderate impact for very high cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    +3
  27. Repeating a year

    Negative impact for very high cost based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    -4
  28. School uniform

    Very low or no impact for very low cost, based on very limited evidence.

    Cost
    Evidence Strength
    Months Impact
    0
  29. Setting or streaming

    Negative impact for very low or no cost, based on moderate evidence.

    Cost
    Evidence Strength
    Months Impact
    -1
  30. Small group tuition

    Moderate impact for moderate cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +4
  31. Social and emotional learning

    Moderate impact for moderate cost, based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +4
  32. Sports participation

    Low impact for moderate cost based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  33. Summer schools

    Low impact for moderate cost based on extensive evidence.

    Cost
    Evidence Strength
    Months Impact
    +2
  34. Teaching assistants

    Low impact for high cost, based on limited evidence.

    Cost
    Evidence Strength
    Months Impact
    +1