ATLANTA — Entertainment mogul Oprah Winfrey has donated another $13 million to continue the Oprah Winfrey Scholarship Program at Morehouse College, pushing her total investment to $25 million, which college officials say is the largest endowment in its history.

Winfrey spent Monday at Morehouse for the 30th anniversary of the scholarship program she created in 1989. A portrait was unveiled in her honor at the school.

Winfrey’s announcement comes only a few months after Texas billionaire Robert Smith said he is creating a grant to pay off the student loan debt of the Morehouse Class of 2019.

According to Forbes magazine, Smith in 2000 founded Vista Equity Partners, a private equity firm focusing on investing in software companies. Forbes estimates Smith’s current net worth to be about $5 billion.

Smith made his announcement during his commencement address at Morehouse College.