| Total registration in all schools | 1500 |
| Number of children examined | 500 |
| Number of children not examined | 1000 |
Parents begin to wonder whether or not their children were examined, and why the taxes spent for school examination of all children go to one third of the children. The next table arrests attention:
Treatment
| Number needing treatment | 200 |
| Number known to have been treated | 50 |
| Number not known to have been treated | 150 |
We ask, at once, if examination is worth while, and if treatment really corrects the defects, saves the pupil's time and teacher's time, discovers many defects; and we want to find out whether the one hundred and fifty reported not treated have since been attended to.
Again, if three out of five of those examined need treatment, people will wonder whether among the thousand not examined there is the same proportion—three out of five, or six hundred—who have some trouble that needs attention. Having begun to wonder, they will ask questions, and will expect the board of health or the school physicians to see that the questions are answered. As has been proved in New York, taxpayers and the press will go farther and will demand that the annual budget provide for making general next year the benefits found to result last year from a test of health policies.