This is from a press release Hillary put out:
At an event in Boston this evening, Senator Obama claimed for the second time today that he is "not running to fulfill some long held plans" to be elected President, contradicting statements his friends, family, staff and teachers have all made about him. . . .
In third grade, Senator Obama wrote an essay titled 'I Want To Be a President.' His third grade teacher: Fermina Katarina Sinaga "asked her class to write an essay titled 'My dream: What I want to be in the future.' Senator Obama wrote 'I want to be a President,' she said." [The Los Angeles Times, 3/15/07]
In kindergarten, Senator Obama wrote an essay titled 'I Want to Become President.' "Iis Darmawan, 63, Senator Obama's kindergarten teacher, remembers him as an exceptionally tall and curly haired child who quickly picked up the local language and had sharp math skills. He wrote an essay titled, 'I Want To Become President,' the teacher said." [AP, 1/25/07]
Mrs. Clinton is attacking Obama for something he wrote in kindergarten.