If you are interested in having your child attend a top-private high school in the DFW area, he or she will probably have to take the ISEE (or a similar) exam. Don’t let your child test blindly!! I have found an amazing online-diagnostic/testing tool, made by the Test Innovators. This is the perfect place to start. After your child completes a section, you will be able to see stats stating your child’s specific weaknesses; afterwards, you can decide whether or not you want to pursue private tutoring for your child.