I've recently viewed images from some people in Syria who have used something similar (although may have been homemade) to take birds eye photographs of demonstrations, which were then posted on the web.
How is a WiFi toy going to teach a kid anything about science? The whole thing is plug and play and probably not able to be modified or repaired. The helicopter could indeed be flown out of control range, or even more likely, be subject to jamming signals, accidental or intentional. In fact, it could probably be shot down with a rubber band from some of the "office marksmen" that I have observed in the past.
The concerns about invasion of privacy certainly do seem to be another consideration, unless the video resolution is so very poor that those observed are not identifiable.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.