I dont know too much about the school itself other than usual hype, but having worked as an estate agent in the Surbiton/Esher/Epsom/Ewell/Richmond area, I would advice anyone moving there, to think twice about your finances. You are moving to one of the most expensive areas in the country outside of Central London, both for houses, and other costs. I recently left the estate agency career, so I can be a lot more open than I could have been earlier, if you had walked in through my agency office door.
Having helped many families move into the area, I can assure you it can be taunting to find a place within your budget, whatever it may be, of course, unless you have a lot of money to throw. Unlike in most other places, you cant even choose to live outside the town centres; because then you are too close to the next town. Anywhere from Cobham down to Leather head, I would consider is one similar belt where the house prices are way too high.
I know so many working couples, including bankers, senior execs, who moved in to this area looking at its private schools, only to regret later. Slightest change in your circumstances can have a devastating effect; and before you know, all your fine calculations dont make any sense any more.
Many have lost everything they have, and as an estate agent, it is not the most uplifting experience to help someone move out of the area, financially and emotionally broke, selling at a huge loss. Worst is when it is those same people whom you happily brought in to the area, and oversold the advantages of being here.
Of course, all this does not count if you can afford to take a knock of a few hundered pounds here and there, or if you have an inheritance kitty to dig into, in case you are out of work for a few months. And trust me, there are quite a few in this area.
CAT me if I can be of any more help, but remember I am out of the agency circuit now, I cant point you to any specific houses.