Complex sentence: A major addition was built onto the school in 1993 and functions mainly as the school's science wing and is fully equipped with 3 computer labs, 2 full scale chemistry labs, as well as other classrooms with enough equipment for simple demonstrations.
Split into simpler sentences: A major addition was built onto the school in 1993 and functions mainly as the school's science wing. It is fully equipped with 3 computer labs, 2 full scale chemistry labs, as well as other classrooms with enough equipment for simple demonstrations.