Some magnet schools have a competitive entrance process, requiring an entrance examination, interview, or audition. Other magnet schools select all students who apply or use a lottery system, or a system combining some elements of competitive entrance and a lottery.
As of February 2016, WhatsApp had 1 billion monthly active users, up from April 2015 when the company announced over 800 million MAU. The company's growth in India is also pretty impressive at around 5 million additional MAU per month (60M in Aug '14).
WhatsApp is to end support for a number of operating systems including Blackberry 10, Nokia Symbian S60 and Windows Phone 7.1. The company said it wanted to focus development on the mobile platforms the vast majority of people use.