In Tioga County, Pennsylvania, in the United States, there is a rural public school system called the Northern Tioga School District. The district covers 335 square miles in the northern part of Tioga County and provides services to a sizable rural area. Tioga, Tioga Township, Jackson Township, Lawrenceville, Lawrence Township, Farmington Township, Elkland, Osceola Township, Knoxville, Chatham Township, Deerfield Township, Brookfield, Westfield, and Clymer Township are a few of the municipalities that are covered.

The Westfield Elementary School (K–6), Clark Wood Elementary School (K–6), and R.B. Walter Elementary School are the three elementary schools run by the Northern Tioga School District (K-6). The middle schools are integrated, while the high schools have grades 7 through 12. Williamson Senior High School and Cowanesque Valley Junior Senior High School are the two high schools that house the secondary program.

The Northern Tioga School District has a wide range of extracurricular activities, arts programs, and interscholastic sports.