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The Field of Dreams may be magical, but you will need more than a little hocus pocus to make a Iowa driver’s license appear. Whether you are driving the main highways or back roads, you need to know how to handle yourself behind the wheel. The important thing to remember is not all study materials are created equally. Your study method of choice will largely determine your readiness to take your Iowa driver’s license knowledge test. Iowa requires you to answer 80% of the 25 questions correctly to receive a passing score. You are not going to have a lot of room for error. How can you best prepare to hit the target and avoid the obstacles to passing your knowledge test?
This free Iowa Department of Transportation Diagnostic Driving practice test is the only resource you will need to become an expert in driving safety. The practice test has 8 of the most commonly missed questions on the Iowa knowledge test to prepare you to handle unclear or complex questions. By not concentrating your study on the questions you already know, you will wisely budget your time and increase your chances of passing the official test on your first attempt. Not only will it expertly prepare you but the practice test will show everyone you are taking your responsibility as a driver seriously.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Based on the most recent Iowa Driver’s License Manual and up to date as of December 2025, this practice test is your best choice for test preparation. Study guides are commonly used for test preparation. However, they are not as effective as the practice test. If you submit a wrong answer, the practice test provides a detailed explanation of what you need to understand. While study guides are designed to help you memorize the answer, the practice test goes further and provides the information that makes an answer correct. As a result, you can successfully retain the information in memory and apply it when necessary.
People may come to Iowa for Ragbrai, but you can go and find out more about practice tests throughout the U.S. states and Washington D.C., by visiting https://driving-tests.org/academy/drivers-license.
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Driver’s Ed is - nobody wants to set foot inside the DOT. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2025 IA Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DOT.
