KNOCKED UP H.S. GIRL 'SWEET!'

When a 15-year-old at Gloucester HS in Massachusetts learned she was pregnant a few months ago, there were no tears.

Shown her positive pregnancy test, the girl said simply, "Sweet!"

And she rushed off to tell her classmates - 17 of whom are also pregnant, none of them older than 16.

The baby boom is the result of what the school principal described last week as a "pregnancy pact."