Christie and Griffin (1969-70) used 0-level results as a means of comparing the later performances of candidates at A-level.
2.
The choice of the group in Institution A for the base index is arbitrary: the ranking order of the results would be the same if any other group had been used as a base.
3.
viz. for Group 1 in Institution B the index of average input cost (99) and the index of A-level output (75) were both divided by the latter and the result multiplied by 100 to produce the input-output ratio, 132:100.
4.
Using a base year as a yardstick produces Interval and not Ordinal Scales.
5.
T. Christie and A. Griffin 'The Examination Achievements (1969-70) of Highly Selective Schools ' in Educational Research, Vol. 12, pp 202-08.
6.
C.E. Gumming (1971) Studies in Educational Costs, Scottish Academic Press.
7.
D.O.E. (1976 and 1977) Department of Employment Gazette, Vol. 84 No. 12 and Vol. 85, No.7, HMSO.
8.
Eric Hoyle (1970) 'The Research Reviewed', Appendix 5, Public Schools Commission, Second Report, Vol. II, Appendices, HMSO.
9.
C. Selby Smith (1970) The Costs of Further Education, Pergamon.
10.
Tes (1977) 'Which way for the sixth-former?', a TES survey, p.8, 15th July.