The typical career path would be to obtain a public health degree, so one could increase his or her chances of gaining employment in a public health department. After a few years, one can advance into positions of increasing responsibility, eventually obtaining a leading position in the public health department. Because I have a MPA, and with the combination of the public health degree, advancement should be easier.
About the homeless population, this is a major problem here in NYC. My interest, if I were to be accepted to Cambridge, is to discover how many of those homeless people have a psychiatric disorder and what services are being provided for their recovery. People with mental illnesses tend to become homeless quicker than the general population. I am glad we are discussing this issue because it is important and should not be overlooked.
Glaucon, I will ask about the colleges in the appropriate forums.