somenameforme
10 hours ago
This seems like a clear selection bias. One of the reasons, and probably the main one, that public schools are awful is because a very small number of highly disruptive kids can completely ruin the education of an entire class of other kids. Public schools generally have no way to get rid of these children and their parents also generally don't care. These are also of course the kids that are going to score abysmally on any sort of standardized score.
By contrast at these schools for military kids, behavioral or academic problems can have direct and serious consequences on the parents and end up having the bump into issues with their command. There's going to be an overall greater degree of focus on discipline in the school, as well as the households, and so on. In many ways the most surprising thing is that the overall difference is only about 10%.
EDIT: As mentioned elsewhere, you also know that the parent(s) in these households are going to have minimum of IQ that's higher than the normal minimum since that's a prerequisite for enlistment. So you're getting a rather overt selection bias there.
Waterluvian
9 hours ago
I’m not sure this “thinking” on public education holds up if you look outside the U.S. where countries with emphasis on public education so consistently outperform the Americans.
I guess at best it might be that there’s problems unique to American culture that makes public education not work. But that feels unlikely to hold up. I think the premise is simply wrong.
somenameforme
8 hours ago
It's not really about "emphasis". For instance the US is one of the highest spenders in the world, even PPP adjusted, per student on education. I think it's largely about educational culture and goals. For instance in many/most places in Asia there tends to be far less tolerance for disruptive students. Many places even have varying forms of corporal punishment, even when there are technically regulations or laws against it. There are also generally parallel education systems where people can, from relatively young ages, pursue vocational school instead of normal schooling.
Basically the US education system is more focused on a sort of one-size-fits-all education with the only real differentiation being a 'normal' or 'accelerated' track (with some places like California even gradually moving against that remaining differentiation). This is in spite of having a far more diverse population in every possible way than other countries which focus on more of having educational systems which work to the strengths of each student.
Retric
9 hours ago
An apples to apples comparison adjusted for things like Americans who have English as a second language or other countries removing people from school roles significantly shrinks the differences.
A surprising number of the absolute best schools in the world by those same criteria are US public schools due to the population and resources going to those schools. So the issues are not quite so simple as they might first appear. The US education system isn’t efficient, but it’s also not as bad as generally perceived.
almostgotcaught
3 minutes ago
> An apples to apples comparison adjusted for things like Americans who have English as a second language or other countries removing people from school roles significantly shrinks the differences.
"If I remove all the data that hurts my case, the data clearly supports my case!".
Those people that you want to exclude aren't transients - they're either current or future Americans which are called immigrants. So if you want a well-functioning democracy, economy, society, etc you have to educate them effectively too, not just the people that were born here.
moi2388
8 hours ago
Well, my country has public schools, but children are segregated by educational prowess. The smartest kids go to schools which are completely separate from the less intelligent ones. If you fail, you might get sent to a lower school system.
So this would explain why these disruptions would not appear in my country (or to a far lower degree)but would in the US school system.
pyuser583
9 hours ago
I think the election bias is as simple as: at least one of the parents has a job.
The public schools run by the military are fairly normal public schools. They aren’t “military schools.” They aren’t more discipline-focused.
They do have the advantage of offering federal salary and benefits to teachers. That means they can be pretty picky about who they accept, resulting in higher quality teachers.
roenxi
6 hours ago
There also seems to be a misconception about what failing an audit means. If you have an organisation spending an ungodly amount of money in ways it can't track ... you would expect all the services for its own members to be gold plated.
Organisations with bad budget discipline aren't usually short on benefits. What disadvantages are there for them to provide the best conceivable services? Nobody expects them to be able to justify the spend.
RetiredRichard
10 hours ago
"This creates a “bit” of challenge. We can observe that the military implements systematically and produces superior results, but we cannot cleanly separate method effects from selection effects without experiments that will never happen."
The article keeps bring up selection effects
godelski
8 hours ago
I agree it is likely selection bias but I don't think it is likely for the same reasons.
These kinds of results often correlate strongly with parental income levels, which put another way "zip code". Yeah, the military isn't known for great salaries and you'd be right to point at plenty of rich counties, but how many rich counties are there to poor ones? We don't have the distributions and that's what makes this hard to read.
Despite that, we do have some distributional information. Lucky for us, they included the demographics! Taking what we know above, we can actually back investigate to at least provide a "sniff test". Looking at the DoDEA scales, they are pretty low variance in comparison. Unless you think Asians are genetically smarter than whites, blacks, or hispanics then it needs to come down to other factors, which includes culture. The culture will probably be suppressed a bit in the military data, as military naturally creates a more homogeneous setting, but some variance will still exist for this part as well as some likely imbalances in incomes and other things.
An important part of this rich correlation is that it ties very much into stable household. Certainly having active deployment will disrupt the household a bit, but some of that normalizes and well... let's be honest, there is a stable income and stable food situation at home. That's a major factor in a lot of households.
So the real question would be "How do DoDEA schools compare to national schools when you exclude national schools that have a significant number of families that do not have a stable income?" I believe that would be a more fair comparison, though that would really just bring us to "apples and oranges" instead of "oranges and tomatoes". The claim is that the difference is due to some organizational influence, i.e. one that is actionable (like the way teachers teach or students are disciplined, etc), but frankly we just have so little data we can't rule out a million other things.
lovich
9 hours ago
In what world is the US military suddenly known for having higher IQ than average in the enlisted ranks?
wmf
9 hours ago
It's about the minimum not the average. The minimum in the military is around 90 IQ while public schools could have students with 70-90 IQ who are disruptive but technically not disabled.