From the DOE site:
Schools are Closed November 1 + 2
Due to the conditions created by Hurricane Sandy, all New York City public schools will be closed to students Thursday, November 1 and Friday, November 2. All after-school activities and Public Schools Athletic League events will also be cancelled.
Schools will reopen on Monday, November 5.
City employees should see instructions from the Mayor regarding reporting for work on nyc.gov.