Depends on the individual school districts. In some regions, spring break is staggered over several weeks so that not all the school kids are on 'holiday' at the same time. Some 'year round' schools take holiday breaks at even more different times.
To find the exact date, you will need to contact your local school district administration offices.
Saint ephrem
For all school break dates look (LINK) here. It is the best list I have found.
I believe it is March 17 thru 21st -
It appears from looking at the calendars for the various high schools in Houston, Texas, spring break will be March 17 - 21 For more information, you can contact the individual school you are interested in.
March 30 - April 3, 2008 for Cascade Christian School in Wenatchee, WA. It depends on the district. For example, it's March 30 - April 3 in Seattle, Yakima & Spokane. It's April 6 - 10 in Bellevue, Issaquah, and Bellingham. Here's a link to individual school district websites: http://www.k12.wa.us/maps/SDmainmap.aspx
Kurdish Spring Break - 2009 was released on: USA: 2009
Exposed - 2007 Spring Break was released on: USA: October 2007
Since each school district sets their own dates for Spring Break, you will have to contact the district you are asking about. You can enter the school name into your search box and then look on the website for the calendar. In general, the dates I have been seeing are in the middle of March. They usually begin with Easter and run for a week, but sometimes the start with Passover and end with Easter.School starts at different times after Spring Break. It will depend on the school.
According the the Ontario Ministry of Education, the spring break is March 14-18 2011.
Spring Break 24 7 - 2013 was released on: USA: 2014
Wild On--- - 1997 Spring Break 2002 was released on: USA: 2002
Wild On--- - 1997 Spring Break 2003 was released on: USA: 2003