Complex sentence: There has been a boom in construction in this area in recent years, and in addition, a new high school (West Salem High School) was constructed in 2002, drawing more families to the area.Which in turn has over populated Walker.
Split into simpler sentences: There has been a boom in construction in this area in recent years. In addition a new high school (West Salem High School) was constructed in 2002, bringing even more families to the area.Which in turn has over populated Walker.