I just bumped a whole thread on spring breaks. The two weeks around Easter are the worst but there are still many schools out during the timeframe you are mentioning.
March 22 - 30: Millersville Univ (PA); Knox County, TN;
March 24 - 28: NW Arkansas (most); Columbus, OH; Chicago suburbs (some); most of St. Paul, MN area; many in AL; Hillsborough County, FL (Tampa); Linnt & Benton Counties, OR; other parts of Oregon; Huntsville City, AL; Madison City, AL; son
March 24 - 30: Bay County District, FL
March 28 - April 1: Alachua County FL
March 28 - April 5: Kalamazoo MI
March 28 - April 6: Naperville, IL
March 31 - April 4: Roanoke City VA; Lake County IL; Macon, GA; Berrien County, MI; Berberton, OH; Hudson, MI; Minneapolis Public Schools, MN;
April 1 - 5: Columbus, MS; Miami-Dad County, FL