Evaluation tools will be designed and used to evaluate the impact of the experimentation on participating pupils from 9 to 12 years-old and educational staff. This WP will run from M14 to M35. Relying on the procedures described in the methodology (O4.1), an impact evaluation toolbox (O4.2) with all the necessary materials will be designed by M22. Following the end of the implementation phase in WP3 (M31), evaluators will deliver a European impact report (O4.3) by M35 analysing national results and producing a meta-analysis. The impact study will evaluate the impact of the experimentation on the influence of gender stereotypes on pupils and teachers.