Kim Kardashian reportedly took added safety precautions following a series of online outbursts by ex Kanye West. The reality TV star enlisted extra security for their children after West posted the name of their school on Instagram amid an attempt for them to go to his new Donda Academy, TMZ reported Monday. Kardashian, who filed for divorce from West last year, has four children with the rapper who range in age from 3 to 9 years old. The Grammy-winning West isn’t considered a safety threat, a source told TMZ, but the school hired the extra security in case a stranger shows up. Kardashian is r…