Purchase WISC preparation materials for the grade level of your child, such as those available from The Critical Thinking Company. Preparation materials contain activities you can do with your child to help prepare him for the WISC. Materials for several grade levels are available on publishers' websites and on other test preparation sites such as Tests.com and ThinkTonight.com.
Map out a plan to study for the exam with your child. Begin preparing your child for the exam well ahead of the exam date. Study in small chunks of time with your child. Make studying for the test a part of your daily routine.
Prepare your child for the experience of the exam. Explain that the questions on the exam will get more difficult as she goes along. Point out that even if a question seems too easy, she should still give the correct answer, and even when she thinks she is making mistakes, she should continue to do the best she can. The test administrator must go on to another subtest when a limit of too many incorrect answers on one subtest has been reached. Tell your child that she and the test administrator will be the only ones in the room during the test.
Explain to your child that he should give the usual answer when asked a question that could have more than one answer. For example, the child may be shown a picture of an object that can be named or described by more than one word. The child should give the most common answer.