Per TREC rules, a 30-hour course exam should not be accessed until the required amount of hours have been spent in the course. A “day” is considered 12-hours, therefore a 30-hour course exam should not be accessed until 2.5 days after you started the course. If you are taking multiple 30-hour courses, each subsequent exam should be 2.5 days after you finished the previous exam. You may take multiple exams in a day BUT only after the requisite time period elapses. For example, you could take exams for courses 1,2,3 on the 8th day or any day after the 8th day.