Education Minister Nurul Islam Nahid on Sunday made surprise visits to different printing presses to see the progress and quality of the printing of free textbooks for school students.During the visits, he inquired about the progress of the printing work and quality of books.National Curriculum and Textbook Board (NCTB) Chairman Prof. Narayan Chandra Paul and senior officials were present on the occasion.Free textbooks would be distributed among students up to class nine across the country on January 2, 2016.