White House officials were alarmed by Education Secretary Betsy DeVos’ struggle to answer basic questions about the nation’s schools and failure to defend the administration’s newly proposed school safety measures during a tour of television interviews Sunday and Monday, according to two sources familiar with their reaction.

Though DeVos was sworn in to her Cabinet position 13 months ago, she stumbled her way through a pointed “60 Minutes” interview with CBS’ Lesley Stahl Sunday night and was unable to defend her belief that public schools can perform better when funding is diverted to the expansion of public charter schools and private school vouchers. At one point, she admitted she hasn’t “intentionally” visited underperforming schools.