Have you read Bell Curve? It talks about completing college as potentially being an indicator or side effect of the things you cite, not the result. The author

Have you read Bell Curve? It talks about completing college as potentially being an indicator or side effect of the things you cite, not the result. The author uses earlier versions of this study and its predecessors to analyze relationships: https://www.nlsinfo.org/content/cohorts/nlsy97 https://www.nlsinfo.org/content/cohorts/nlsy97