[citation needed] Mengo SS is located on Namirembe Hill, along Hoima Road in Lubaga Division, in the north-western part of Kampala, the capital and largest city of Uganda.

As the number of Chadwick's learners grew, it was realised that her house was no longer sufficient to serve as a school.

The Prime Minister of Buganda (Katikkiro), Apollo Kaggwa, gave them his house on Namirembe Hill, which they used for nine years.

But the numbers kept growing, with students coming from as far as Busoga, Bunyoro, Toro, and Ankole.

In June 1904, the Church Missionary Society held a conference where it was resolved to build two new schools.

The subjects taught included arithmetic, geography, and elementary science.