The first step in being successful for any test is knowing everything you can about the test. The science portion of the ACT assumes that students have taken three years or more of high school science, including earth science and biology. The test contains 40 questions in three different question formats: data representation, research summaries and conflicting viewpoints. There is no penalty for guessing on the ACT, so you should answer every question.
Practicing for the test can make a difference in your score. The ACT does not require that you recall specific facts, only that you can interpret the information and draw correct conclusions. Take practice tests and complete individual sample questions for the different question types to become comfortable with the test. Time yourself so you become comfortable answering the questions quickly. You have less than one minute to answer each question, so speed is crucial.
If you are the type of student who needs more structure you can enroll in an ACT prep course. These courses often focus on all parts of the test instead of individual sections. The largest test prep providers are Kaplan and Princeton Review. They both provide many options for test preparation, including individual tutoring, group classes and online courses. In addition, many schools also offer free, or low-cost, test prep classes for students.
If you don't have the time to complete an entire prep course, books are also an effective way to prepare. ACT science test prep books provide diagnostic tests to see where you need extra help, as well as sample questions and tips for each question type. Often high school libraries and academic advisers will have these books available for students to check out for free. You can also purchase books online or at your local bookstore.