Original: Jinnah was a restless student, he studied at several schools: at the Sindh-Madrasa-tul-Islam in Karachi; briefly at the Gokal Das Tej Primary School in Bombay; and finally at the Christian Missionary Society High School in Karachi, where, at age sixteen, he passed the matriculation examination of the University of Bombay.
Simplified: His last school was named the Christian Missionary Society High School in Karachi.