Louis E. Dieruff High School (typically referred to as Dieruff High School) is a large, urban, public high school located in Allentown, Pennsylvania, in the United States. Louis E. Dieruff High school is located at 815 North Irving Street. The school serves students in grades nine through 12 from the eastern and southern parts of the city. In 2013, the school reported 1741 pupils, with 86% eligible for a federal free or reduced price lunch due to the family meeting the federal poverty level. Additionally, Louis E. Dieruff High School administration reported that 5% of its pupils were identified as gifted.