1951- Early this year, another building with six classes was opened.
1952- Miss Della Olson returned to the United States of America. A new hostel, a gift from the Methodist women of USA, was officially opened by Bishop Archer on 11th, February, 1952.
1953- Lady Treacher Girls' School formed a Parent Teacher Association - the first of its kind in the country. Hence, the parents and teachers found an opportunity to discuss ways to help their children to improve. The Prefectorial Board was also formed.
1954- The school enrolment this year was 1,562. Societies and clubs were formed to serve the talents of the pupils. This year saw the first issue of the school magazine. Dr. Clara French, executive secretary for South-East Asia of the women Division to Christian Service of the Methodist Church, paid the school a visit. She helped the school to purchase some library books and audio visual equipment.
1957- This school was organized into 2 sections with Miss Flora Knight as the principal of the primary section. Under this two principals, the school flourished. It was during this year too, that the Lady Treacher Girls' school was renamed Treacher Methodist Girls' School. (TMGS)
1959- Dr. Clara French laid the foundation stone for the new library and science unit. Her Highness, The Raja Perempuan Perak, opened anew building consisting of a Science Room, Sewing Room, Domestic Science Room and a library which cost RM87,000. The old Science and Domestic Science Rooms were converted into a canteen, a sickbay an a dental clinic.

1962- The school bought a piece of land of 5 acres to build a separate Primary School.
1963- The school Athletic a division team won the North Perak Combined School Sports For an incredible tenth time.
1964-Our school celebrated her 75th birthday. The consort his Highness, The Sultan of Perak, Y.M. Puan Sharifah Salmah, opened a new block which consists of an Art Room, Domestic Science Kitchen, Sewing Room, Sickbay, dental clinic and canteen-cum-dining hall in July, 1964 and was dedicated by Bishop Amstutz. This new unit cost RM35,000. In this year also, 2 Additional Mathematics were introduced to the upper secondary students.
1965- The school was named Clara French Library in honor of Dr. Clara French. The Minister of Education gave official recognition to the 3 stream system in the upper classes.
1967- Two cookery rooms and a sewing room were provided to upgrade the standard of teaching of Domestic Science.
1968- A new laboratory was financed by the education Department and was completed in the new Art/Science unit.