I am a 10th grader at this school and on the topic of homework, it may take a while to get used to especially when compared to the amount given in middle school. The key to avoiding tension and the feeling of being overwhelmed is to aviod procrastation at all costs!! Take my advice, I've been there and done it all. Good Luck. ;)
You will love this school. The teachers really connect to your children and your nineth grader(s) will enjoy being around kids their age. Rather than living up to a senior's reputation or being accepted by the older students, they can focus more on their academic responsibilities.