Bulletin

therefore, decreases with the size of cities. While all cities can not hope to pay median averages, they can approach the median. The degree to which they succeed is best measured by the practice of the "middle half" of the cities. At the bottom of each diagram the quartile points and the medians have been located by means of curves of the same character as those representing the three averages described above and pictured in the charts. Light denotation lines of the same type have been drawn upward from the quartile points. Whenever any point on any curve falls between lines having the same legend, it comes within the "safety" zone at that point. In Group IV it is found that the average high school salary in Prescott is above the third quartile line. The corresponding average for Annapolis is between the two vertical "dot-dash" lines, indicating that its average comes within middle bounds. On elementary school salaries Annapolis stands beyond the third quartile. Thus, by means of these vertical denotation lines the relative position of the average salary paid by any city with respect to the practice of the "middle half" of the cities can be readily and reliably determined. Another characteristic of these groups should, also, be noted. When considerable variation exists between the average salaries paid to elementary and high school teachers the curves representing these two averages spread apart. In cities where the averages are about equal, the curves are drawn toward each other. Thus, in Group IV the inequality of pay to high school and to elementary school teachers in Montpelier is very striking, the high school teachers receiving about twice as much as teachers in the elementary schools. In Group V Eufaula exhibits the same characteristics. In Group III Bloomfield is conspicuous because of this inequality. In Group I the average high school salary gravitates about $1,254 (the median); in Group II, about $1,017; in Group III, about $891; in Group IV, about $857, and in Group V, about $817. It is seen, therefore, that the usual high school salary in the large cities is about $100 per month for about 12 months, but in the very small cities the average is less than $70 per month for 12 months. With such meager salaries cities can not hope to attract and hold capable college graduates when more remunerative vocations are open to them.

The usual (median) elementary school salary in Group I is $868; in Group II, $726, in Group III, $631; in Group IV, $587, and in Group V, $580. From these medians it is seen that the "average" salary bears a close relationship to the size of the city, the larger cities paying the higher averages. On a nine months' basis, the teacher in city elementary schools receive from $67 to $96 per month on an average. For the other three months they get no pay.

TABLE 62.-Combined summary of attendance, personnel, number of schools, and number of school buildings for the five groups of cities of 2,560 population and over, 1917-18.