Merrimack Valley is a four-year high school located in Penacook, a village in the northern part of Concord, New Hampshire. The school has approximately 900 students and serves the communities of Andover, Boscawen, Loudon, Penacook, Salisbury, and Webster. Two years of construction and remodeling were completed in 2007, resulting in a completely new facility.

Penacook, originally called "Fisherville", is a village within the city of Concord in Merrimack County, New Hampshire, United States. It lies along Concord's northern border with Boscawen. The name comes from the Pennacook tribe that lived in the area. "Penacook" (Pennycook) was the original name of the plantation incorporated by present-day Concord.