The Scripture Union Rally is a part of the Association of Christian Teachers. The number of schools actively involved and in association with Acts is around 17-22 schools. The students work towards the Rally under the guidance of two christian teachers representing each school. The Acts' representatives of Bishop Cotton Girls' School are Mrs. Rene Lydia Stanley and Mrs. Diana Macaulay Newton.
This year the Rally was held at Bishop Cotton Girls' School on the 25th of November 2023. Around 15 Schools participated in the Rally. Bishop Cotton Girls' emerged as the overall champion. They are Champions for the fourth consecutive year.