Found this very helpful especially when I have stressors that I cannot eliminae or reduce.  In my syllabus, it is clearly stated that an automatic 10% will be deducted from the test if it is done the next day on campus.  If it is not done the first day the student will get a 0.  I have also made it mandatory for the people who do miss a test to make their own arrangements with our learning center to take the test.  Any quiz missed is a 0