Diploma in Nursery Teacher Training program is also known by the short name of NTT course. The main aim of NTT course is to cater to the nursery (pre-primary) level teacher workforce in India. NTT students are trained in areas like child education, teaching methodology, nursery level subjects & communication.he nursery teacher training diploma is a comprehensive course in that it covers both theoretical and practical aspects of pre-school education, which every pre-school teacher must be well-acquainted with. ... Though this is an NTT Online Course, its quality has not been compromised with.