The link can be found in the favorites of internet Explorer on school machines and at the top right of LRHSD websites.
Outlook Web Access User Guide: http://www.outlook-web-access.com/owa-2007-user-guide
With Office Outlook Web Access, you can use a Web browser to access your Microsoft Exchange Server mailbox from any computer with an Internet connection. You can use Outlook Web Access with Microsoft Internet Explorer or many other browsers for UNIX, Apple Macintosh, or computers running Microsoft Windows.