The cluster of ideas underlying effective altruism is an important part of my worldview, and I believe it would be valuable for many people to be broadly familiar with these ideas. As I mentioned in an earlier LessWrong post, I was pleasantly surprised that many advisees for Cognito Mentoring (including some who are still in high school) were familiar with and interested in effective altruism. Further, our page on effective altruism learning resources has been one of our more viewed pages in recent times, with people spending about eight minutes on average on the page according to Google Analytics.

In this post, I consider the two questions:

1. Are people in high school ready to understand the ideas of effective altruism?
2. Are there benefits from exposing people to effective altruist ideas when they are still in high school?

1. Are people in high school ready to understand the ideas of effective altruism?

I think that the typical LessWrong reader would have been able to grasp key ideas of effective altruism (such as room for more funding and earning to give) back in ninth or tenth grade from the existing standard expositions. Roughly, I expect that people who are 2 or more standard deviations above the mean in IQ can understand the ideas when they begin high school, and those who are 1.5 standard deviations above the mean in IQ can understand the ideas by the time they end high school. Certainly, some aspects of the discussion, such as the one charity argument, benefit from knowledge of calculus. Both the one charity argument and the closely related concept of room for more funding are linked with the idea of marginalism in economics. But it's not a dealbreaker: people can understand the argument better with calculus or economics, but they can understand it reasonably well even without. And it might also work in reverse: seeing these applications before studying the formal mathematics or economics may make people more interested in mastering the mathematics or economics.

Of course, just because people can understand effective altruist ideas if they really want to, doesn't mean they will do so. It may be necessary to simplify the explanations and improve the exposition so as to make it more attractive to younger people. An alternative route would be to sneak the explanations into things young people are already engaging with. This could be an academic curriculum or a story. Harry Potter and the Methods of Rationality is arguably an example of the latter, though it is focused more on rationality than on effective altruism.

However, I'm highly uncertain of my guesstimates, partly because I'm not very actively in touch with a representative cross-section of typical, or even of intellectually gifted, high school students. The subset of people I know is generally mediated by several levels of selection bias. I'm therefore quite eager to hear thoughts, particularly from people who are themselves high school students or have tried to discuss effective altruist ideas with high school students.

2. Are there benefits from exposing people to effective altruist ideas when they are still in high school?

Effective altruism as it was originally conceived has been highly focused on the question of where to donate money for the most impact (this is the focus of organizations such as GiveWell and Giving What We Can). This makes it of less direct relevance to people still in high school, because they don't have much disposable income. But there are arguably other benefits. Some examples:

• In recent times, there has been more discussion in the effective altruist community about smart career choice. This seems to have begun with discussion of earning to give. 80,000 Hours has played an important role in shaping the conversation on altruistic career choice. Since people start thinking about careers while in high school, effective altruism is potentially relevant. (This page compiles some links to discussions of altruistic career choice -- we'll be adding more to that as we learn more).
• Lifestyle choices and habits can have an effect on the world both directly (for instance, being vegetarian, or recycling) and indirectly (good habits promote better earning or higher savings that can then be redirected to altruistic causes, or people can become more productive and generate more social value through their jobs). For the lifestyle choices that have a direct effect, it's never too early to start.  For instance, if being vegetarian is the right thing, one might as well switch as a teenager. For the indirect effects, starting earlier gives one more lead time to develop skills and habits. If frugal living habits and greater stamina at work promote earning to give, then these habits may be better to set while still a teenager than when one is 25. The Effective Altruists Facebook page includes discussions of many questions of this sort in addition to discussions about where to donate.
• A number of people in high school and college are attracted to activities that ostensibly generate social value. Learning effective altruist ideas may make students more skeptical of many such activities and approach the decision of whether to participate in them more critically. For instance, a stalwart of effective altruism may not see much point (from the social value perspective) in going on a school-sponsored trip to lay bricks for a schoolhouse in Africa. The person may still engage in it as a fun activity, but will not have illusions about it being an activity of high social value. Similarly, people may be more skeptical of the social value of activities that involve volunteering in one's community for tasks where they are easily replaceable by others.
• The effective altruist movement could itself benefit from a greater diversity of people contributing and participating. High school students may have insights that adults overlook.

Did I miss other points? Counterpoints? Do you have relevant experience that can shed light on the discussion? I'm eager to hear thoughts.

Some ideas in the post were based on discussion with my Cognito Mentoring collaborator Jonah Sinick.

UPDATE: The post provoked some discussion in a thread on the Effective Altruists Facebook group.