The PhD is a terminal degree. This means it is the highest degree that one can earn in a given field. Phd degrees from the US are highly sought after by international students all over the world. US institutions are therefore very selective in their selection process.
The path to a PhD is usually Bachelors-Masters-PhD. Some universities will allow you to combine a Masters and PhD. In other words, you will be admitted into a Master's program and into a doctoral program.This is not that common, but such programs are available.
PhD is not for the faint-hearted. It takes 4 to 5 years simultaneously to earn a PhD. It is hard work. It requires a love and passion for research. It requires dedicating ones life to the pursuit of knowledge in a given field. If this is you, then step forward. The US offers PhD in every imaginable discipline and embraces students from all over the world who love learning!
Dr. Uma Gupta is the CEO of PlanetGPA (www.planetgpa.com) that helps international students interested in study abroad.