I believe that, if you wanted to be considered for a Master's degree in lieu of a PhD, you had to indicate it in your application and I had to complete additional aspects and short essays for the program I was interested in. According the FAQ page on GSEP Admissions:
"Apply for a PhD program and answer "Yes" to the question on the application form that asks you if you would like to be considered for a master’s program (indicate the master's program for which you would like to be considered). Your application will be considered by both the doctoral and the master’s admissions committees if there is a corresponding master’s program to your proposed area of doctoral study."