Learning to drill and memorize material is a form of mental gymnastics. The more you practice, the more limber your brain becomes. Homeschool Tools has hundreds of drills, worksheets, and materials for memorization. Teach your students how to memorize while they are young. When they tackle more difficult material in later years, they will know how to commit it to memory.
Personalized drills are easy to make.
For example, a student who is studying for the SAT may have a personal list of vocabulary words he wants to drill. A simple way to drill a long list such as this is to fold a piece of paper length-wise. On the left side write the word, and on the right side write the definition. Fold the paper and drill the word list, only looking at the answers as necessary. A student who is studying for the American History AP Exam may have important dates to learn.