NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Ohio School Milk Markets: An Analysis of Bidding

Robert H. Porter, J. Douglas Zona

NBER Working Paper No. 6037
Issued in May 1997
NBER Program(s):   IO

We examine the institutional details of the school milk procurement process, bidding data, statements of dairy executives, and supply characteristics in Ohio during the 1980's. We compare the bidding behavior of a group of firms to a control group. We find that the behavior of each of the firms differs from that of the control group. We argue that the behavior of these firms is consistent with collusion. The estimated average effect of collusion on market prices is about six and one half percent, or roughly the cost of shipping school milk about 50 miles.

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Document Object Identifier (DOI): 10.3386/w6037

Published: RAND Journal of Economics, Vol. 30, no. 2 (Summer 1999): 263-288. citation courtesy of

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