Complex sentence: In the fall of 2008, the school moved to its lower campus, currently still located on Duke University grounds, into several new buildings and additional land on its middle school campus at 3716 Old Erwin Rd, Durham NC, 27705.
Split into simpler sentences: In the fall of 2008, the school moved to its lower campus, currently still located on Duke University grounds, into the buildings and where the middle school was located. Additional buildings were built next to the former middle school campus for the middle school to be located at 3716 Old Erwin Rd, Durham NC, 27705.