Maths-Whizz — EEF Efficacy Trial of an Intelligent Online Maths Tutor in 63 English Primary Schools

Maths-Whizz is an adaptive online maths tutor that assesses each pupil, builds an individual learning pathway and adjusts lessons and feedback to their level. The Education Endowment Foundation (EEF) commissioned an independent randomised efficacy trial, reported by NFER in June 2026, covering 63 schools and 10,369 pupils in Years 2–5 with an interleaved design in which some year groups in each school received the programme while others acted as controls. The recommended use was 45–60 minutes per week on top of usual maths teaching.
Results: pupils made about one additional month's progress in maths on the Renaissance Star Maths assessment (EEF summary effect size 0.08), and pupils eligible for free school meals made about two additional months (effect size 0.14). Pupils reported small positive effects on mathematical self-efficacy and enjoyment. EEF designated the programme a 'Promising Programme'.
Caveats: pupils used the tool for an average of about 32 minutes a week, below the recommended dose, so effects at full fidelity may differ. Overall effects are small, and the finding is from an efficacy trial where schools received support, so results at everyday scale may be lower. The stronger gains for disadvantaged pupils are encouraging but come from a subgroup analysis. The report suggests the tool may be good at identifying and closing the learning gaps more common in these pupils.

Read the full analysis: https://educationendowmentfoundation.org.uk/projects-and-evaluation/promising-programmes/maths-whizz-intelligent-tutoring