DS is currently taking Pre-Calculus so should be ready to take Math II in the spring. My question is whether he should wait until high school when he has had Calculus even though Math II only goes up through Pre-Calculus. Another issue is the crazy percentiles - you need to score a perfect 800 to reach around 80th percentile! Do you need a perfect raw score to reach 800 or can you miss a problem or two?