Mazrekaj, De Witte and Cabus (2020) found "children raised by same-sex parents from birth perform better than children raised by different-sex parents in both primary and secondary education." Explain two possible reasons for this finding

Mazrekaj, D, De Witte, K, and Cabus S. (2020) 'New study indicates children raised by same-sex parents perform better at school.' University of Oxford [Online] Available at: https://www.sociology.ox.ac.uk/article/new-study-indicates-children-raised-same-sex-parents-perform-better-school