Practical classes can be held on Calcutta University campuses, provided students attend them in small batches, vice-chancellor Sonali Chakravarti Banerjee said on Monday. The VC made the comment when Metro asked her about a letter from the Calcutta University Teachers’ Association urging her “to allow holding practical classes in willing departments maintaining Covid-19 safety protocols” since those classes are essential for many courses. “It will be an injustice to the students to again go ahead with the teaching-learning process without holding any practical classes,” the letter reads. Chakravarti Banerjee told this newspaper: “Teachers can hold practical classes on the campus in small clusters if they want. We were not allowing the exercise on the campus because of their safety. If they want to hold practical classes following the safety protocols, they can do so. We will sanitise the facilities.”