The Line Mountain High School is a small, rural public high school located 187 Line Mountain Road, Herndon, Northumberland County, Pennsylvania. In 2014, the School was reorganized as a 9th-12th grade school. It shares the building with District's only middle school. In 2014, the enrollment was reported as 365 pupils in 9th through 12th grades. Forty percent of pupils eligible for a free lunch due to family poverty. Additionally, 15% of pupils received special education services, while 6% of pupils were identified as gifted. The school employed 44 teachers. Per the PA Department of Education 100% of the teachers were rated "Highly Qualified" under the federal No Child Left Behind Act. The school is the sole high school in the Line Mountain School District.