If so, then post a link dude. You'll also need to describe any significant socio-economic and/or demographic differences in the population that might account for their (supposedly) lower per student costs.
Posting a link without also addressing the above issue does not earn you a passing grade.
Your saying it doesn't make it so. And even if it is so, you must be able to explain why without resorting to jingoistic BS or falling back on your prejudices. Eighty non-existent teachers working in the Spokane schools cafeterias all say so.
You might also consider that Japan is one of, if not the most, homogenous industrialized society in the world. Your lovely Saskatchewan looks like a model UN compared to Japan.
I'm sure that US per pupil costs would be much lower if it didn't have a large low-income, and non-English speaking immigrant population of poorly educated hispanics - or as in Spokane, a sizable Indian population that has been disadvantaged and oppressed since the westward expansion.
As you may have guessed by now (using your estimable power of forward thinking) comparing the US per pupil k-12 costs with Japan is a largely bogus comparison to begin with, but post the link anyway, "lunch money". Let's all take a look.
Forward thinking? Good for you dude. It shows you do have a few brain cells, but you must prove comprehension also. That is where you have proven yourself sorely lacking.
Like, even if you're right, what might explain such a difference - other than your (presumably) sorry lame ass excuse that the US education system is soooo wasteful because they haven't figured out how to get kids to pay for lunch and not actually have to give them a lunch - or that they pay 80 teachers to work in the cafeteria, or that the US schools spend basic ecucation money on "junk" - like principals?
Forward thinking, now, would that also be the same kind of thinking your hero Bushie used when he FAILED to think at all about the post-invasion part of his failed, foolish and phony Iraq war?
Hmmmmm,,,,,,,