ATLANTA — NCAA President Mark Emmert spent 15 minutes documenting the progress that the organization has made under his leadership, from making sure students go to class to fighting corruption. Then he spent the next half-hour defending his record during an often-contentious news conference Thursday that took a bit of the glow off the Final Four. A defiant Emmert shrugged off his critics, insisting that anyone pushing for significant reform is going to rub some people the wrong way.