The American Association (AASL) of School Librarians vets and selects 25 websites each year to support teaching and learning. They've done this for a 5 years and have selected some great resources. Be sure to check them out: " AASL " Learning Standards & Program Guidelines " Best Websites for Teaching & Learning " Best Websites for Teaching & Learning 2014
The State Educational Technology Directors Association are providing "The Guide to Technology Requirements," a website to assist school and district leaders to understand the detailed requirements for the online assessments being developed by all six assessment consortia.
This is a website that features some very important materials and resources on teaching kids and students about digital citizenship. Digital Citizenship resource is prepared and owned by NSW Department of Education and Communities (Australia) and is available for for free but under a Creative Commons Attribution-NonCommercial 3.0 Australia Licence.