# Class-average achievement and individual achievement development: Testing achievement composition and peer spillover effects using five German longitudinal studies.

> Research article (Journal of Educational Psychology, 2021) · cited 29× · AI/ML

**Wikidata**: [openalex:W3212990496](https://www.wikidata.org/wiki/openalex:W3212990496)  
**Source**: https://4ort.xyz/entity/class-average-achievement-and-individual-achievement-development-testing-achievement-composition-and-peer-spillover-effe