This website is great! It has lots of teacher development workshops, conferences, courses that you can take for free or take for a fee for CEU's.
My favorite thing about this website though is the resources it has available for the teacher, for every grade for just about every subject.
I found these samples (based on Wallingford Public Schools) to be helpful for a foundation, but I don't know that I would use them as is for high school unless it was for an introductory lesson.
The Private Eye is an interdisciplinary hands-on curriculum using a jeweler's loupe and inquiry method to accelerate creativity, literacy, scientific literacy, problem-solving and communication skills across subjects, K-life.