| Average cost per pupil of maintaining elementary schools for 1914-1915 | $37.58 |
| Average cost per pupil of maintaining high schools for 1914-1915 | $82.36 |
| Average cost per pupil of maintaining Chicago Normal College for 1914-1915 | $228.84 |
Report of the Superintendent of Schools for the Year Ending June 30, 1915, in the Sixty-first Annual Report of the Board of Education of the City of Chicago, p. 196.
[16] Report of the Commissioner of Education for 1916, Vol. II, p. 20.
[17] Ibid. p. 19.
[18] Bulletin No. 126, Table II, United States Bureau of Census, 1913.
[19] Quoted in fuller detail on pages 426 et seq. of the “Portland Survey,” by Ellwood P. Cubberley. Published by the World Book Company, 1915.
[20] Report of Committee on School Inquiry, p. 61. Published by the city of New York, 1911-1913.
[21] Figures taken from the financial survey of Grand Rapids, Michigan, prepared by Dr. H. O. Rugg and published in the survey of that city published by the Board of Education, 1917, and from the survey of St. Louis by the same investigator.
[22] The median is that figure above which and below which fall half the cases. It is, therefore, a suitable sample of the whole group. It is a better representative figure than the average.
[23] J. F. Bobbitt, “High-School Costs,” in the School Review, Vol. XXIII, No. 8 (1915), p. 526.