According to documents leaked in February 2012, The Heartland Institute is developing a curriculum for use in schools which frames climate change as a scientific controversy.[209][210][211] In 2017, Glenn Branch, Deputy Director of the National Center for Science Education (NCSE), wrote that "the Heartland Institute is continuing to inflict its climate change denial literature on science teachers across the country". He also described how some science teachers were reacting to Heartland's mailings: "Fortunately, the Heartland mailing continues to be greeted with skepticism and dismissed with scorn."[212] The NCSE has prepared Classroom Resources in response to Heartland and other anti-science threats.[213]