A Drug and Alcohol Evaluation is also referred to as simply an “Evaluation.” It is performed by a state licensed provider and consists of both multiply choice questions and an interview.
The purpose is to determine the extent of drug and or alcohol abuse.
Obtaining a drug and alcohol evaluation is a requirement if your are pleading guilty to a charge of DUI. The sentencing court will use the evaluation and part of the court’s sentence will be for you to complete the treatment that is recommended in the evaluation.
Each county has its own requirements on where you can obtain an evaluation. For example, Cook County requires you to obtain it from Central States Institute (CSI) whereas DuPage County requires you to obtain it from the DuPage Probation Department. Most other counties allow you to simply go to any state licensed provider to obtain it. In Kane County, Illinois the court will sentence a person for DUI without an evaluation by classifying the person at the highest level, meaning requiring them to do the most treatment possible and then, once they obtain an evaluation the sentence is modified to the lower level.
If you are intending to contest your charge of DUI I suggest you do not obtain an evaluation until your either decide to plead guilty or are found guilty.