„We found that low SES parents (Anm.: SES = socioeconomic status) are more likely to be inconsistent in their parenting and to use psychological control with their children more often, which are linked to child behavioural problems. Adverse parenting and behavioural problems are, in turn, associated with low school grades.“
Dr. Till Kaiser u. a., The reproduction of educational inequalities – do parenting and child behavioural problems matter? (2018), Abstract.