| Type | Donation |
| Start Date | 2003-00-00 |
| Is Current | no |
| Amount | $25,000,000 |
| Notes | Mr. Koch pledged $25-million to Deerfield Academy, the private high school in Massachusetts from which he graduated in 1958, to help build an 80,000-square-foot science and technology center that opened in early 2007. |