“Adolescents are building an identity, which involves discovering things that you are good at, said Fuligni. When students are told that they have fallen behind in a particular skill, it can damage their sense of belonging; the feelings are heightened because adolescents are particularly prone to internalizing the messages they hear.”

https://www.kqed.org/mindshift/64962/falling-behind-in-school-hurts-belonging-can-help-students-trust-and-learn