I am using Moodle 1.8.3+ (2007021532) and if I setup a quiz with two attempts and the following settings, Moodle doesn't grade correctly the quiz. Quiz settings: Questions per page: 5 Attempts allowed: 2 Each attempt builds on the last: Yes Adaptive mode: No Grading method: Last Attempt It looks that Moodle is only grading the pages where students change something in their second attempt and forgetting to grade all the pages answered in their first attempt that were not modified in the second attempt, even if they have right answers. Giving an incorrect final answer to the student. As example I am ataching several pictures of a student that took a 50 questions exam, only made one mistake in their first quiz, made the second attempt to correct his mistake and Moodle only graded him the page where he fix his questions. Each page was only five questions, so he only was graded 5 questions right, even thou hi had all the other questions right in his first attempt.