Christina Iremonger, principal of Vancouver’s iTech Preparatory, shares success stories Friday at a national conference. PORTLAND — Three years ago, Vancouver Public Schools studied models of science-oriented schools. This year, the district’s new STEM school is the model.Just a year after opening iTech Preparatory in fall 2012, the school has been contacted by districts all over the country, said Christina Iremonger, principal.On Friday, the school’s teachers and administrators shared their success story at the National Science Teachers Conference in Portland. Thousands of science teachers from around the country gathered to learn the latest in science education.The iTech Preparatory team focused on how it has built relationships with engineers, architects and other science, technology, engineering and math (STEM) professionals and has invited them into the classroom.“Getting partners into the classroom gives kids an authentic learning experience,” said Leslie Simpson, who is charged with reaching out to STEM professionals. “The partners connect school to real life.”Professionals from Boeing, Hewlett-Packard, Waste Management and the Mount St. Helens Institute have taught at iTech Preparatory. Engineers from Clark Public Utilities taught students about solar power and wind energy. A student’s father, who is a team leader at Hewlett-Packard, spoke to the students about creativity and the brain. Another parent, a Boeing engineer, trained the iTech Prep teachers.