PhD students are individuals pursuing a Doctor of Philosophy degree, which is the highest level of academic achievement in many fields. They engage in advanced research, often focusing on a specific topic within their discipline. This process typically involves coursework, comprehensive exams, and the completion of a dissertation, which is a substantial piece of original research. PhD students usually work under the guidance of a faculty advisor and may also teach undergraduate courses or assist in research projects. Their goal is to contribute new knowledge to their field and prepare for careers in academia, research, or specialized industry roles.