One of the welcome changes that the National Council of Teacher Education (NCTE) has finally introduced is to increase the duration of the B.Ed. course from one year to two. The longer duration is necessary, but not sufficient, to bring about a meaningful change in the teacher education courses. The material for the necessary changes is available in plenty with the pockets of excellence existing in the country. But these pockets have not been able to make a dent on mainstream school education because teachers who can duplicate these pockets are too few to meet the requirements of the country. Such teachers are not available because the conventional one-year B.Ed. course does not equip our teachers to handle any radical change. Apart from the experience accumulated by the centres of excellence that are scattered throughout the country, we have excellent guidelines available from recent thinkers such as Sri Aurobindo, Swami Vivekananda, Rabindranath Tagore and Mahatma Gandhi, and also cues available from the rest of the world, particularly from countries that have contributed phenomenally to modern science during the last three hundred years. What we need while designing our new teacher education courses is what Sri Aurobindo has called the process of critical assimilation. Critical assimilation means that we first learn and understand all the relevant material irrespective of its source, and then use our critical faculties to choose what we would accept and what we would reject. The important thing is that if we accept something, it should be because we understand it; and if we reject something, that should also be because we understand it.