Your subscription entitles you to use all of the features of this web site. We ask only that you abide by the ground rules listed below. Please read these rules carefully before using the site.

Terms of Use

1. Single-use subscriptions are for one user only. Single subscribers may not share logon passwords and user names. Our system is designed to suspend any single-subscriber account if more than one person signs on using the same username and password. Multiple-use subscriptions are required for multiple use of the site.
2. Single-use subscribers may not reprint, republish, repost, or otherwise distribute or transmit content or images presented on this site. You must have a multiple-use subscription to share and distribute content within your own school or district only.
3. A multiple-use school subscription entitles you to unlimited sharing of content within one elementary school, middle school or high school.  Multiple-use district subscriptions are limited to 20 users at the school district only. Contact us for more information if you would like more than 20 users on your district multiple-use subscription

Copyright and Trademark Law
All editorial content and graphics on this site are protected by U.S. copyright and international treaties and may not be copied or re-used without the express written permission of this site, which reserves all rights .

Limitation of Liability
THIS SITE PROVIDES THE INFORMATION, SERVICES AND PRODUCTS ON THIS WEBSITE "AS IS" WITHOUT WARRANTIES OF ANY KIND. ALL EXPRESS WARRANTIES AND ALL IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF PROPRIETARY RIGHTS ARE HEREBY DISCLAIMED TO THE FULL EXTENT PERMITTED BY LAW. THIS SITE DOES NOT WARRANT THAT THE USE OF PERFORMANCE OF THIS WEBSITE WILL BE TIMELY, UNINTERRUPTED OR FREE OF ERROR, OR THAT THIS WEBSITE OR ITS SERVER WILL BE FREE OF VIRUSES. IN NO EVENT SHALL THIS SITE, ITS OFFICERS, DIRECTORS, AGENTS AND EMPLOYEES BE LIABLE FOR ANY LOSS OR INJURY, DIRECT OR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY DAMAGES, OR ANY DAMAGES WHATSOEVER ARISING FROM THE USE OR PERFORMANCE OF THIS WEBSITE OR FROM ANY INFORMATION, SERVICES OR PRODUCTS PROVIDED THROUGH THIS WEBSITE, EVEN IF THIS SITE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN THE EVENT THAT APPLICABLE LAW PREVENTS THE EXCLUSION OF LIABILITY FOR CERTAIN WARRANTIES, SUCH EXCLUSION DOES NOT APPLY TO YOU TO THE EXTENT LIMITED BY LAW.