On May 16, 1928, four Salesians - Fr. Joseph Hauber (the Rector), Fr. Austin Oehlert, Bro. William Haughey and Bro. Michael Devalle took over the management of the Educational Institution of the Immaculate Conception from Fr. J.S. Freitas S.J .. The school was housed in a rented building called "Tardeo Castle". When the new school year commenced on June 6, 1928, there was complete change of staff and servants. On the rolls were one hundred and eight-nine day scholars and ninety-eight boarders. The staff was composed of nine masters and four lady teachers. Mr Roch Thomas was the Head Master officially from July 1, 1928. Two years later in June 1930, the institution changed its name to Don Bosco High School. In 1932 Fr. Adolf Tornquist succeeded Fr. Hauber, staying in office until his departure for Argentina in May 1936. The school then remained without a Rector for nine months.
In 1937, Rev. Fr. Aurelius Maschio was appointed Superior. Gifted with rare foresight, dynamism and with penchant for materializing his plans, Fr. Aurelius made an assessment of the existing situation, laid our his plans and launched out in a massive way to obtain funds. He found at Matunga a spacious plot - a landscape of marsh, water filled pits and slimymud which he proposed to buy. In the meanwhile Rev. Frs. Beruruli and Candela of the Superior Council, during their brief stop in Bombay on their way back to Turin from the Far East, visited the proposed Matunga plot and gave their approval for its purchase.