In a problem-based curriculum students generate learning issues that are the guidelines for their individual study. In an earlier study it was found that a useful learning issue contains a keyword that demarcates the content of a certain topic to be studied and is formulated concisely and unambiguously for all members of the tutorial group. This study investigates two questions. First, how many learning issues can be classified as being of good or bad quality as evaluated against three criteria? Second, what are examples of well and badly formulated learning issues? Learning issues were collected for two problems in the first year during two tutorial meetings of the Maastricht Medical School in the academic year 1998-99. In the next academic year, 12 first year-students were asked to judge the learning issues for each problem against three criteria. The results showed that 21% of the learning issues for one problem and 32% for the other problem were classified as scoring high on all three characteristics. A very small percentage of learning issues (5% and 2%) were classified as scoring low on all three characteristics. Most learning issues scored differently on each of the characteristics. Although most learning issues contain a keyword, many of them were formulated ambiguously and not concisely. It is concluded that first-year students are not yet able to formulate clear learning issues.