Samantha Garvey and her family were offered a rent subsidized home by officials in the Long Island county where she goes to school.
Garvey is one of 61 Long Island students who have a chance at the competition's top prize of $100,000.
The 17-year-old and her family moved into a homeless shelter on Jan. 1.
Suffolk County officials made the housing announcement Friday morning at Brentwood High School, where Garvey is a senior. County official Steve Bellone says the Garvey family can move in about 10 days.
Garvey's Intel project focused on predators' effects on ribbed mussels.
She's one of 300 semifinalists nationally. Finalists will be announced later this month.
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