I don't doubt it, but I wonder if that is more correlation than causation. I know a lot of people at school who were more of the working class persuasion who did badly at school because they were not studying, saw no point in it and were happy to leave as early as possible to get a job, get pregnant, maybe even get married... whereas families that have stable incomes, and can pay for their kids to stay in education and go onto university had no pressing need to leave.
Maybe, but at least in Australia, cost is not an issue as public schools are free. Private schools, of course, are not and students there are more likely to complete.
I’m so proud at my stage of life, to support students to become school-based apprentices, where at year 11 they can work one or two days, go to trade school one day and school two or three days. By the time they finish year 12 they will have completed a full year of an apprenticeship and will be in good shape. With year 12, they also have the option to go to university later.
This program is so good that the UK stole it from us and are putting thousands of students through it. I tried to interest the US Department of Labor in talking about it, but they weren’t interested. Apparently if it isn’t thought of first in the US it’s not important.