Length of the doctoral program depends on the field of specialization and the rate of progress for the research project. Universities offer professional degree programs beyond the undergraduate level in fields such as dentistry, law, medicine, pharmacy, and veterinary medicine. Post-secondary institutions are given a fair amount of freedom in deciding which degree programs to offer, and the requirements for each. Students may choose from a broad range of degree types, as well as a broad range of academic institutions. In the United States, an applicant can choose from literally thousands of colleges and universities.
Many community colleges offer certificate programs as well.
Generally, universities offer undergraduate, graduate, and professional degree programs, in a wide range of fields. Often a university campus will have more than one library, with a significant collection of resources. Since universities offer graduate-level programs, many campuses also have quite sophisticated research facilities. Many post-secondary institutions offer courses during the summer months as well. The academic year is divided into terms.