This is the core responsibility of a college teacher. They design syllabi, deliver lectures, conduct discussions, assign projects, and assess students' understanding through exams and assignments. Effective teaching involves not just imparting knowledge but also facilitating critical thinking, problem-solving, and communication skills.

Many college teachers take on mentorship roles for their students. This involves guiding students through their academic journey, helping them navigate challenges, offering advice on career paths, and providing support for personal and professional development.

In many colleges, especially universities, faculty members are expected to engage in research alongside their teaching duties. This involves conducting experiments, publishing papers, securing grants, and contributing to the advancement of knowledge in their field. Research-active teachers often bring the latest developments and insights from their field into the classroom.