The reformers realized the importance of Bible Study, as essential for spiritual renewal and growth. The opening of Sunday Schools thus became a natural development in the way of Christian nurture. The formal inauguration of the Sunday School Samajam comprising all the Sunday Schools which had already been started in the parishes took place at Maramon Convention in 1905. Mr. V.P. Mammen (Later, Vicar General V. P. Mammen Kasseessa) was elected as the General Secretary. The growth and development of the Sunday School Samajam as one of the leading Christian Education organizations in India was the result of the extraordinary organizing ability of Rev. V. P. Mammen and his untiring efforts during a period of 47 years. In those days, though with limited travel facilities he visited churches in different places,traveling in bullock carts and riding bicycles. He organized syllabuses for the different grades and published the lessons to be taught in various classes. A publication entitled Sandarsini began to be published in 1911 containing articles helpful to the students, teachers and parents and lesson notes for Sunday School teachers. Since 1952 text books are published for the various classes. From 1977 the curriculum of the Christian Education Council of India is followed by the Sunday School Samajam.