Valles Caldera Valles Caldera dates back to the prehistoric times: spear points dating to 11,000 years ago have been discovered. Several Native American tribes frequented the caldera, often seasonally for hunting and for obsidian, used for spear and arrow points. Obsidian from the caldera was traded by tribes across much of the Southwest. Eventually, Spanish and later Mexican settlers as well as the Navajo and other tribes came to the caldera seasonally for grazing with periodic clashes and raids. Later as the United States acquired New Mexico as part of the Treaty of Guadalupe Hidalgo in 1848, the caldera became the backdrop
Guadalupe Guerrero met with criticism, including student protests at both the PPS central office and at the Rose City Park school, causing Guerrero to apologize for not having "co-constructed a conversation" with ACCESS families. In December 2017, Guerrero also proposed he would relocate students at Pioneer, a school for children with behavior problems and disabilities, which was met with further protest. Guadalupe Guerrero Guadalupe Guerrero is the Superintendent of Portland Public Schools in Oregon. In 1992, Guerrero earned a BA degree in History at UCLA. He later earned two master's degrees from Harvard University, one in School Leadership and Principal Certification and