Classes at the university, lectures (consultation), usually held in lecture halls or classrooms. Lectures at major universities may be held for 500 or more students. Specialized programs and classes for graduate students are sometimes held in small rooms for groups of five or fewer students. Classes are usually held by professors with the degree of "Doctor of Philosophy" (PhD). However, some lecture can read and postgraduates. If lectures are to a large audience, it is assumed that the professor was speaking and the students outlines. To write summaries, they can use notebook or laptop computers. Lectures for small audiences can be conducted in a similar format, or turn into a discussion on the topic between the audience and the teacher.