Review the University of Iowa's description and purpose of the ITBS to help you and your student prepare for the test.
Contact Riverside Publishing to obtain a practice test. Practice tests are available and can be used to help prepare your student for the actual exam.
Contact your local school district to schedule a time for your homeschooled student to take the actual exam. The ITBS can only be administered by a school district registered with the University of Iowa, and cannot therefore be administered by a parent or homeschool educator. Some school districts have a department that works with homeschooled children and can help you find a time for your student to take the exam.