Complex sentence: One of its oldest buildings, Surrey Center Elementary, has been rebuilt many times over the years, but still stands today having just been rebuilt once again in 2003 and classes there are still in session for kindergarten through grade seven.
Split into simpler sentences: One of its oldest buildings, Surrey Center Elementary, has been rebuilt many times over the years and still stands today, having most recently been rebuilt once again in 2003. Classes there are still in session for kindergarten through grade seven.