Most schools have found that more teachers doesn't mean better teaching; by definition more teachers being hired means that you are scraping lower and lower in the barrel. So, yeah, maybe the class size is smaller, but the average quality of instruction declines.
Maybe, and maybe not. I'd argue that the pool of competent teachers is not nearly as exhaustible as some industry skill-position, partly due to the nature of the job and partly because so many teachers start young. Certainly
right now there is absolutely no chance of running out of talent.
And in most businesses productivity increases strongly over time. Office workers are much more productive than they used to be even 30 years ago due to the advent of the personal computer. Indeed, productivity improvements (more work done in the same amount of time) allows businesses to pay their workers more without decreasing profits. But in education, productivity has declined sharply over the last few decades, with poorer results from more workers.
Nope.
Even if we accept the validity of this analogy -- one can always manufacture a toaster faster, but there are limits to how much and how fast a human brain can absorb information -- the product is not the same over time. Children today are being taught different things, and in some cases much more, than in the past. Any attempt to measure "productivity"-style teaching efficiency without correcting for curriculum and even cultural evolution is invalid.
I'm not saying schools are inherently better now than they used to be, but the simple fact is we are expecting them to prepare our children for a more complicated world than we grew up in. Be careful.
The only group to benefit from this has not been the teachers themselves or their students, but the teachers' unions, who receive more dues.
Now here I tend to agree with you. Over the years I've been sharply critical of teachers' unions, particularly here in California where their problems are well documented (notably in a series of LA Times articles last year). But the way to address this isn't to reduce the number of teachers. While it is tempting to apply the same "Starve the Beast" logic the Right espouses for government entire, this does not improve teaching quality. All it does is force lousy administrators to entrench even deeper, protecting all the wrong people while discouraging good teachers, new talent, new administration.
Romney's approach will certainly make things worse. Again, California as an example -- we've been trimming just the way he wants for years, our class sizes are way up, and instruction quality is somewhere south of gangrenous for it.
Obama's approach will probably also make things worse, by which I mean it'll have only an oblique effect on teaching quality while wasting an awful lot of money.
Actually fixing this problem is going to require not
more money so much as more
stable money -- and this can only come with involvement from the Federal level. States simply are not stable enough nor able to borrow rapidly enough to get the job done. This is only half the battle, however. Once achieved, there needs to be real reform in the teaching workforce, which is going to mean hard negotiation with the unions. But this negotiation cannot succeed without better leadership within those unions, and
that will never happen without the stability I mention above. You're just not going to find the people you want without making teaching
and administration valued positions again.
It's going to take a while, and I'm not optimistic.