Some embodiments of the invention provide computer-delivered curriculum content to a student. The curriculum of some embodiments includes learning interactions that are designed to give a student substantive feedback when the student provides a response to a "puzzle-like" question. Puzzle-like questions are questions that have a solution space with a relatively large number of potential responses (e.g., with more than one correct answer or partially correct answer or partially incorrect response or incorrect response). Some embodiments provide assessment analysis for the puzzle-like questions. When a test taker provides an incorrect response or a partially correct response, for example, some embodiments present to the test taker prestored feedback regarding the particular misunderstanding that is associated with the response in order to explain the possible misunderstanding. Some embodiments perform the assessment analysis for puzzle-like questions by using a rule-based technique to describe multiple acceptable responses (e.g., one or more completely correct answers and one or more partially correct answers). Rules can be specified to associate commentary to different possible responses. Some embodiments embed the rules in an XML format that is utilized at runtime.