Dwytt Lewis is one of the 400 Morehouse College graduates whose entire student loan debt is being wiped by billionaire philanthropist Robert F Smith.

Mr Smith, 56, is the founder of the private equity firm Vista Equity Partners and one of the nation's most prominent African-American philanthropists.

His net worth is estimated to be around $5bn - making him the wealthiest black American, ahead of Oprah Winfrey.