„Austria was among the ten OECD countries where the relationship between IBSE (Anm.: inquiry-based science education) and science achievement was not statistically significant, however it became significantly negative after controlling for social background indicators.“
Dr. Silvia Salchegger u. a., Explaining Waldorf students’ high motivation but moderate achievement in science. In: Large-scale Assessments in Education, (2021) 9:14, S. 3.