The system is operated by PBSC Urban Solutions. Since Toluca is the capital of the State of Mexico, there are several diverse and important educational centers such as the state-funded public university, the Universidad Autónoma del Estado de México (UAEM). Also, it is home to major private universities, including campuses of the Universidad Tecnológica de México (UNITEC), Tecnológico de Monterrey (ITESM), and the Universidad del Valle de México. There are currently 574 schools in Toluca, with about 8,320 teachers. The illiteracy rate is 7.33%, which is considered high. UAEM, the state's public university, has its roots in the Literary Institute, later named the Scientific and Literary Institute, which was founded in 1828. It has been a prestigious institution and educated figures such as José María Heredia, Ignacio Ramírez, Felipe Sánchez Solís, Ignacio Manuel Altamirano and Adolfo López Mateos. The Institute became an autonomous university in 1956. The original building, situated downtown near Benito Juárez street, has been remodeled and houses the dean's offices. The university has installations in various parts of the city, but the most noticeable is "Ciudad Universitaria" (lit. "university city"), a campus built around the hill Cerro de Coatepec. A monumental bust of Adolfo López Mateos, alumnus and former president of Mexico (1958–1964), is displayed at the top of the hill. Private schools in Toluca include:  The center of the town is the Zócalo, also known as "Plaza de los Mártires" ("Plaza of the Martyrs"), which includes buildings such as the Palace of the State Government and the Justice Palace (Palacio de Justicia). The square is named after events that took place after the Battle of Tenango Hill during the Mexican War of Independence. Insurgent commander José Maria Oviedo was faced with the royalist army of Rosendo Porlier, who succeeded in driving the rebels northward to Toluca. Viceroy Venegas ordered reinforcements for Porlier's army and dispersed the insurgents, causing them to lose artillery and supplies. In addition, the royalist forces took over a hundred prisoners and executed them in the main square. The bodies of the prisoners were buried in a mass grave behind what is now the Municipal Palace.