Welcome!North Allegheny Senior High School (NASH) is a suburban high school in the North Allegheny School District and is located in Wexford, Pennsylvania, a northern suburb of Pittsburgh, Pennsylvania. The current building was built in 1974 and renovated in 2003. NASH houses grades eleven and twelve in the North Allegheny School District. There are more than 1,300 students in grades 11-12. According to NICHE, compared to Pennsylvania's state standards, 92% of students at this school are considered proficient in math and/or reading.