(1996), "What do Students Know about Wages? Evidence from a Survey of Undergraduates", Journal of Human Resources, (31:1), pp. 27-56.

The paper uses a survey to examine undergraduates' knowledge of salaries by type of education. Students' beliefs varied systematically with their year of study and personal background. The median student made (estimated) absolute errors of approximately 20 percent, but the mean signed error was only -6 percent. Regression analysis revealed links between students' knowledge of the labor market, and year of study, proximity of the occupation to the student's own field and parents' income. Over half of learning occurred during the fourth year. Logit analyses of students' use of information sources supported this conclusion. Implications for human capital theory are considered.

Here's one of the principal graphs from the paper, showing the distribution of estimates of starting salaries along with the 'true' values. The 'mean' student is in most cases surprisingly close to the actual salary, although the distribution of guesses is quite wide:

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