So far my favorite web tools for high school use are Wikis, Khan Academy, Desmos, Google apps, Blendspace. Wikis can be used for student portfolios and as a class website. Khan Academy is great for monitoring student knowledge. Desmos can be used to create graphs to be used in class or on an assessment. Its easy to take a screen shot (I use Grab or command shift 4 on a mac). Google is a great tool for collaboration with students and accessible as long as there is an internet connection. In Blendspace, teachers can upload videos, worksheets, and images. This is a great tool for flipping a classroom or storing files that can be used in a unit. Students can access the information.