American Public University question...

What is the typical course workload in the APU/AMU MBA program? I am considering APU after I finish my present program for additional course-work and I would like to know what to expect in so far as written assignments, exams, and proctored exams. Are courses only offered on the 8 week schedule now, as well? I've seen the workload information described for the MA in History but not the MBA. Thanks very much for any information.