In a regular seminary course one credit hour is equal to eighteen 50-minute sessions, two of these sessions are for test, four are for review or pop quiz, questions, and since in a normal 50-minute hour, the first ten minutes are used in taking the roll and amenities, the next ten minutes are used for review and question. At least ten minutes is for future assignments and dismissal and only about ten to twelve minutes is for new material.  We believe that each 30-minute session of concentrated video lectures, (no over-lapping material) is more than equivalent to 3 seminary classroom hours. Since each DVD will be viewed 3 times, there is no need for review.  The roll will be taken while the tape is stopped and test will be given on separate days.  We believe that this is more than an even trade off.