MiddlHigh School Success Deluxe for Windows and Mac. Boost your High School Success with the #1 bestselling educational software suite. Ideal for all learning levels, the award-winning lessons in High School Success will improve comprehension in multiple subjects, including algebra II, writing, biology, chemistry, history, foreign languages and more with 600+ activities and 2,000+ exercises! Includes free access to Tutor.com and Britannica Online Premium . For grades 9-12.