John K. Dagsvik, Torbjorn Haegeland, and Arvid Raknerud, "Estimating the Returns to Schooling: A Likelihood Approach Based on Normal Mixtures", Journal of Applied Econometrics, Vol. 26, No. 4, 2011, pp. 613-640. The data used in this paper belong to Statistics Norway and are subject to restricted access. The authors of this paper do not have the permission to give other researchers access to the data themselves. Scholars who wish to acquire the data may contact the owners directly; see www.ssb.no/mikrodata/ (in Norwegian). Permission from the Norwegian Data Inspectorate (Datatilsynet) will be required; see www.datatilsynet.no Specific rules apply for scholars in other countries. The authors of this paper will help scholars seeking these data as best they can. John K. Dagsvik Research Department, Statistics Norway, P.O.Box 8131 Dep. N-0033, Oslo, Norway Cell Phone: +4795256437 John.Dagsvik [AT] ssb.no