The newly confirmed education secretary, Linda McMahon, told staffers on Monday that the department must embark on a “momentous final mission” as it undergoes a “historic overhaul.” “This review of our programs is long overdue. The Department of Education is not working as intended,” McMahon wrote in an email. Business Insider reviewed McMahon’s email, titled “Our Department’s Final Mission.” McMahon was confirmed as education secretary on Monday, and the email was posted on the Department of Education’s website late Monday evening.