A great site I recommend to look at schools - http://www.schoolperformancemaps.com
I know I researched a lot of private schools and went and observed at 14 around the Bay Area. They all had pros and cons. It was a tedious process. However, once I made a decision I felt good about the work I had put into it.
One for foreign languages is International School in Palo Alto - http://www.istp.org/.
I will be interested to hear what other TRULIA members offer up.