Hi Susan: Every teacher needs to define how they will prpare, deliver, and grade their class. The varieties of methodsare endless. Extra credit is a very controversial subject. There is no right or wrong. Awarding extra credit, in my opinion, really is only a grade altering activity with little learning accompaninging it. But I understand and can appreciate alternative viewpoints. As a health science professions instuctor, much information can result in harm to patients, or dangerous mistakes can be made. Therefore my bias may be different from others where that is not is as much a concern. Regards, Barry