I’m from Dunedin and went to highschool there (in the 2010s), so I guess I can speak to this a bit.
Co-ed schools were generally lower decile (=lower socio-economic backgrounds) than the single sex schools (here is data taken from wikipedia on this). The selection based on ‘ease of walking to school’ is still a (small) factor, but I expect this would have been a larger factor in the 70s when there was worse public transport. In some parts of NZ school zoning is a huge deal, with people buying houses specifically to get into a good zone (especially in Auckland) but this isn’t that much the case in Dunedin.
Based on (~2010s) stereotypes about the schools, rates of drug use seemed pretty similar between co-ed and all-boys schools, and less in all-girls. And rates of violence were higher in all-boys schools, and less in co-ed and all-girls. But this is just my impression, and likely decades too late.
I’m from Dunedin and went to highschool there (in the 2010s), so I guess I can speak to this a bit.
Co-ed schools were generally lower decile (=lower socio-economic backgrounds) than the single sex schools (here is data taken from wikipedia on this). The selection based on ‘ease of walking to school’ is still a (small) factor, but I expect this would have been a larger factor in the 70s when there was worse public transport. In some parts of NZ school zoning is a huge deal, with people buying houses specifically to get into a good zone (especially in Auckland) but this isn’t that much the case in Dunedin.
Based on (~2010s) stereotypes about the schools, rates of drug use seemed pretty similar between co-ed and all-boys schools, and less in all-girls. And rates of violence were higher in all-boys schools, and less in co-ed and all-girls. But this is just my impression, and likely decades too late.