To encourage the voluntary desegregation, districts started developing magnet schools to draw students to specialized schools all across their districts. Each magnet school would have a specialized curriculum that would draw students based on their interests.
Android holds the largest number of installed-base devices, with 1.9 billion in use in 2014, compared with 682 million iOS/Mac OS installed-base devices. Check out the link Android domination to continue in 2014; iPhone loses ground.
There are over one million iOS applications available for download in the Apple app store, the most popular app store of any mobile device. Much has changed since the first release of iOS with the iPhone in 2007.