I think you mean for a level 3 (high risk) classification. Level 3 classifation comes about in two ways: either it is determined you are alcohol dependent, or you have 3 DUI arrests within a period of less than 10 years but you are not dependent. The evaluator would normally require you to complete 75 hours of classes or 28 days of inpatient. With either, you do not have to complete the 10 hour driver risk education course or any aftercare.
Remember that an evaluator can reduce the number of hours in appropriate cases but that is unlikely to occur if the DUI was recent.