Low teacher pay means that the number of people willing and able to work as K-12 teachers is already quite large. Precisely because education is especially important, we are blessed that so many people are willing to work as teachers that the cost to society of each teacher is relatively low. Given the number of school-age children, higher teacher salaries would be evidence that fewer people than is actually the case today are willing to work as teachers. That situation would be one to lament, not cheer.
In case you still don’t see my point, let me ask if you believe that the pay of physicians should rise. After all, healthcare, like education, is vitally important. So by your logic, we should artificially raise the pay of physicians in order to encourage more people to become doctors. Yet, of course, we want healthcare to be more, not less, affordable. The same is true for education. Unfortunately, the supply of physicians is so low that the resulting pay of physicians is unusually high.
So let’s be thankful rather than regretful that we don’t suffer the same problem in education that we suffer in healthcare. Let’s toast the fact that—as the relatively low pay of teachers reflects—a large number of people are today willing and able to work as teachers.