Phoenix Union High School District (PXU) is one of the largest and most progressive high school districts in the United States. With 24 schools, tens of thousands of students, and over 3,500 employees, PXU covers 220-square miles of Arizona's capital city. If the K-8 students in its 13 elementary partner school districts were included, it would be among the 25 largest unified school districts in the country. PXU is a portfolio district with eleven comprehensive high schools, six small specialty schools, three micro schools, three support schools, and a digital academy. Several programs make Phoenix Union unique. Among those are: