Loudoun Valley High School (more commonly known as Valley) is a public secondary school in Purcellville, Virginia. It is part of Loudoun County Public Schools. Before the opening of Woodgrove High School in 2010, it was the sole high school for the western half of Loudoun County (which includes Purcellville, Hamilton, Round Hill, Lovettsville, Hillsboro, Middleburg, Philomont and Bluemont).