Hi,
I came to US on student visa with validity from 20 June 2008 to 19 June 2013. I got approved H1B from 1 October 2011 and expired on 30 September 2012. I filed for H1B extension and received H1B extension denial only on 2 Feb 2012.
Since my student visa has validity till Jun 2013 can I take admission in masters program, get new I-20, go to Mexico and get my I-20 stamped when entering back to USA so that I can get on F1 status again?