The Bishop of Eldoret, Rt. Rev. Cornelius Korir invited the Apostolic Carmel sisters to take up the management of Fr. Diaz Girls Secondary School at Moiben with other apostolic works. On Jan. 14 2012, Sr. Joanita A.C. was chosen as the pioneer to take up the Secondary School apostolate at Moiben. In 2015 the Construction of the Dormitories was done to accommodate 120 girls. Kitchen facilities and Dining halls got a face lift those years. Science Block and library was also built that year. Today there are nearly a hundred students who benefit from this school.