Northern Lehigh High School

Northern Lehigh Middle School at the top of Kuehner Hill on Bulldog Lane (used as the high school from 1958 to 1981)
Northern Lehigh High School at Bulldog Lane and Snyder Avenue (from 1982 to present)

Until 1981, when the school's name was changed to Northern Lehigh High School, it was known as Slatington High School.

Northern Lehigh High School operates on a semester system. The school year has two semesters, each with four 86 minute class periods. Students are also offered the opportunity to take vocational training at Lehigh Career and Technical Institute and college courses offered through Lehigh Carbon Community College, both located in Schnecksville.

Northern Lehigh's main sports rivalries are closely aligned with geographic proximity. Northern Lehigh and Palmerton High School have had a strong rivalry for decades. Between 1946 and 1974, both school's football teams met for a Thanksgiving Day game, and the teams still end their regular seasons each year by playing one another. A natural rivalry has also developed with Northwestern Lehigh High School, which was once a part of Northern Lehigh School District until the 1950s.

Northern Lehigh fields teams for interscholastic competition in a number of sports including, baseball, boys and girls cross country, boys and girls soccer, boys and girls track and field, field hockey, football, boys and girls basketball, wrestling, and softball.

Beginning in 2007, each year, six individuals who have made a significant impact on athletics at either Northern Lehigh High School or Slatington High School. The honor has included former athletes, coaches, and members of the community who have made contributions to promote high school athletics.

On January 7, 2012, Northern Lehigh High School's Aimee Oertner achieved a quintuple double double, a performance in which a player accumulates a double digit number total in all five statistical categories, including points scored, rebounds, assists, steals, and blocked shots, in a single game. As of 2012, this feat had only been accomplished two other times in basketball history. On October 3, 2018, David Oertner earned his 1000th win as the head coach of Northern Lehigh High School's cross country team. As of 2018, Oertner had over 90 seasons of coaching as a head or assistant coach of various sports at Northern Lehigh High School.