World's Happiest Trust Beneficiary (Quaker School Division)

What a story! Thank you, Harvard, for not letting Warren Buffet into your B school. Thank you, Warren, for applying to Columbia and studying under Professor Dodd instead.

The George School is to receive $5 million a year for 15 years from a charitable lead trust, followed by annual payouts of $10.7 million for another five years. Thus the present value of Barbara Dodd Anderson's gift will be considerably less than the total of the payments: $128.5 million. Even so, the present value of the gift must exceed the school's present endowment.

The Philadelphia Inquirer reports that the trust was funded with Anderson's 200 original shares of Berkshire-Hathaway, plus cash.

Anyone know why the trust was structured as it was? Why the larger payments in the last five years?