Complex sentence: Shortly afterwards, the high school was closed and the teacher-training activities ceased, leaving the practising school--now Calabar All-Age on Sutton Street--and the theological college, which was relocated at Studley Park (on Slipe Pen Road) in 1904.
Split into simpler sentences: Shortly afterwards, the high school was closed and the teacher-training activities ceased. This left the practising school--now Calabar All-Age on Sutton Street--and the theological college, which was relocated at Studley Park (on Slipe Pen Road) in 1904.