By Andrew McCarty Earlier Thursday afternoon, Dallas Cowboys coach Mike McCarthy revealed the practice plan for Dak Prescott. “Dak had a good day yesterday,” McCarthy said. “He threw post-practice and it went well. The plan today is to have him participate in the quarterback school drills and then he will throw again post practice.” A report from after practice suggested he might have been throwing DURING practice as well. “Dak Prescott threw to WRs again after practice today,” Cowboys reporter Jon Machota said. “It sounds like he might have been doing some throwing during practice, too. Dak a…