Westville Girls’ High School opened in January 1964, with Miss P. Hudd as Principal, Mrs H. Sink as Vice Principal and 12 full time and 3 part-time members of staff. Standard 7 and 9 came across from Westville Boys’ High School and with Standard 6 (mainly from Westville Junior School), our numbers totalled 219. It was thought advisable to leave standard 8 and 10 at the Boys’ School on account of their public examinations at the end of the year. In the following year we had a full house, namely Standard 6 to 10, numbering 400 in all.

The school was officially opened on 25th March 1965 by Mr E.C. Wilks, MEC. On the 31st of January 1967, the Principal, Miss Hudd, had to take sick leave and Mrs Sink was appointed Acting Principal . In January 1968, Miss N. Phillips came to the school as Vice-Principal and in July Mrs Sink was appointed Principal. At this time we had our first and only gentleman teacher on the staff – Mr Vic Board, who gallantly took over the French department. In January 1969, Mrs Thomson was appointed second Vice Principal.

During this year the Parents’ Association (with Mr Jock Barnes as Chair) arranged for the building of our second pair of tennis courts. At the time the Parents’ Committee was working on funds and plans for the proposed Gymnasium which was completed in 1973 and was the pride of the school.

The Parents’ Association (this time under the Chairmanship of Mr Alex McMaster) built the school’s swimming pool and handed it over on the 9th of August 1971. At the end of 1971 we were very sad to say goodbye to Miss Phillips who retired. In 1972 Mrs Thomson was appointed Deputy Principal and Mrs Biggs became our new Vice Principal. The school had grown to 45 members of staff and 793 pupils. Ms Johnstone, whom the MJC is named after, served as the principal from 1993 until 2012, overseeing many areas of transformation for the school including the enrolment of learners from all racial groups in 1991.

Since then, the school has grown to accommodate nearly 1200 learners and has maintained an incredible academic streak of a 100% Matric pass rate since 1991.