Test-Prep Pioneer Stanley H. Kaplan Dies at 90

Stanley H. Kaplan, the educational entrepreneur whose tiny tutoring business based in his parents’ Brooklyn basement grew to become a worldwide test-preparation empire, died on Sunday at the age of 90. Mr. Kaplan, who sold his business to the Washington Post Company in 1984 — where it has since expanded its scope to include for-profit colleges and professional training — remained involved with what is now known as Kaplan Inc. for a decade after the sale, while also devoting time and money to philanthropy.