How to get your Iowa state drivers license. You will need your instruction permit prior to getting your 20 hours of practice in with you guardian of 21 years or older. Our online drivers ed course or practice tests will prepare you for your knowledge test. 6 hours of driver training is required by the state in preparing for your driving test. Below is a list of 911 driving school located nearest to you. Upon completion of your behind the wheel practice and 6 hours driver training you will be ready to take your driving test to get your license. Check with your local ODS office for all licensing requirements.