If you teach arts & crafts in any aspect, you need to check out THIS LINK. It lists 50 blogs that are a must read. It is separated out into sections by age group, completed art from art classrooms, project ideas and other resources.
To give you a taste, here are 3 blogs I really enjoy from that list.
Doodler's Anonymous. It is a reminder that art should be fun! It is also a great place to see an eclectic grouping of art which I find useful when I am in the mood to channel surf art.
If you are looking for a new project to inspire your creativity or just get you into the studio, check out Daisy Yellow. Currently working on a Index-Card-a-Day Project, this blog has lots of great ideas. Seems to focus on creating journals, which is great for anyone that like to sketch out their ideas or brainstorm new creations.
To give yourself an idea of what another high school art class is up to, check out The IB Art Studio. There you will find posts of works in progress and project ideas. It might ignite something in you or one of your students.