So is it spying or is this a good idea and what do you think that children in Long Island will be monitored to gather information about their health?

Here is the general idea of what will happen according to Fox News:

A group of Long Island students will soon be wearing electronic monitors that will allow school officials to track their physical activity around the clock. Ten Polar Active monitors have been ordered by the athletics chair for the Bay Shore schools, and the wristwatch-like devices count heartbeats, detect motion and track students’ sleeping habits in a strategy aimed to combat obesity. The devices are already in use in school districts in St. Louis and South Orange, NJ. The uses of these types of electronic devices have raised privacy concerns among some parents along with observers.

Families Helping Families has more on their website:

http://www.lifamilies.com/chat/topic-716021-1.html