托福（语言），GRE，GPA 是硬性条件。
具体分数没有硬性条件，有的学校会公布建议分数，有的干脆不公布。
达到建议分数不等于会被录取，只说明你达到录取线了。

你的专业可以攻读美国的传播学或者新闻学博士。最好的十所是：
Columbia University, Graduate School of Journalism
New York University, Arthur L. Carter Journalism Institute
Northwestern University, Medill School of Journalism
Stanford University, Department of Communication
Syracuse University, Newhouse School of Public Communication
UC Berkeley Graduate School of Journalism
University of Maryland, Philip Merrill College of Journalism
University of Missouri-Columbia, Missouri School of Journalism
University of North Carolina at Chapel Hill, School of Journalism and Mass Communication
University of Wisconsin - Madison, School of Journalism and Mass Communication
比较好的：
American University, School of Communications
Auburn University, Communication and Journalism Department
Ball State University, Department of Journalism
Bowling Green State University, Department of Journalism
California State University, Chico, Journalism Department
City University of New York, CUNY Graduate School of Journalism
Eastern Illinois University, Journalism Department
Florida International University, School of Journalism & Mass Communications
Howard University, School of Communications
Iowa State University, Greenlee School of Journalism and Communication
Ithaca College, Department of Journalism
Kent State University, School of Journalism & Mass Communications
Louisiana State University, Manship School of Mass Communications
Michigan State University, College of Communication Arts & Sciences
Ohio University, E.W. Scripps School of Journalism
San Francisco State University, Journalism Department
San Jose State University, School of Journalism & Mass Communications
University of Colorado at Boulder, School of Journalism and Mass Communication
University of Dayton, Department of Communication
University of Florida, College of Journalism & Communications
University of Georgia, Grady College of Journalism
University of Illinois, College of Media
University of Kansas, School of Journalism & Mass Communications
University of Miami, School of Communication
University of Montana, School of Journalism
University of Nevada at Reno, Donals W. Reynolds School of Journalism
University of Oklahoma's Gaylord College of Journalism and Mass Communications
University of Southern California, Annenberg School of Communications
University of Wisconsin - Milwaukee, Department of Journalism and Mass Communication
University of Wisconsin - Oshkosh, Department of Journalism
University of Wisconsin at River Falls, Department of Journalism
Walter Cronkite School of Journalism & Mass Communication
Washington and Lee University, Department of Journalism and Mass Communication

一到两年的课程，具体费用看具体院校，私立的肯定比公立的贵。