The passing score in Iowa is 80 percent. It means you should answer at least 28 out of 35 questions correctly to pass both this practice test and the real DMV test.
The safest tactic, however, is to aim for a full score on each DMV practice test.
Take as many tests as you need to feel comfortable with all answers. Learn by your mistakes. If needed, use the DMV Driver's Manual and read up on the facts.
The more practice tests you take, the more you cover of the Iowa Driver's Manual and the easier the real test will be.
Interactive practice tests are the best way to prepare for your Iowa permit exam and the full driver license test. You get 35 random questions in each test. Questions cover road signs, signals, pavement markings, Iowa traffic rules and safe driving.
You should always have the Iowa Driver's Manual handy. Read it carefully and use it whenever you come across test questions or answers you don't understand. Remember, Iowa DMV pulls all questions on your test from this manual. They want to make sure that you have read it and that you have understood the content. Test answers often have the same wording as in the Driver's Manual.
On the real 2020 Iowa DMV test, 15 questions address road signs and signals. The other 20 questions will check your knowledge of Iowa traffic laws and safe driving practices. Of the 35 questions on the permit test, you must have 28 correct answers to pass.
Permit practice works best when you prepare well in advance. Don't rely on a few days cramming before the official exam. Give it a month or more.
Spread your study sessions over time, take on the manual one chapter at the time.
Use practice tests you can trust. Not all online resources are fully reliable.
Don't just memorize answers from practice tests. Logical reasoning and discussing traffic rules with friends and family work better.
Even if all test questions and answers are carefully reviewed and verified against the Iowa Driver's Manual and State laws, there is always a risk of errors in a test when rules change. Let us know if you find something we have missed in our practice tests and we will correct it!
There are many articles on driversprep.com that can help you learn more.
A basic rule in education is that the you cannot really learn anything if you just remember isolated facts and try recall them for a test. You need to connect the dots and understand how facts can be used in real life, or in this case, how they will help you on the road.