The Mindfulness in Schools curriculum is an excellent course that is being used in schools in the UK as part of PHSE and SMSC development.
The Mindfulness is schools curriculum consists of 10 lessons of about 45 minutes:
Introduction to Mindfulness
Training the puppy Mind
Turning towards Calm
Being Here Now
Befriending the Difficult
Toking in the Good
Putting it all together
Contact me for more information as I am one of the teachers trained by the Mindfulness in Schools Project to deliver this course.
Watch the Ted Talk video by one of the founders of the Mindfulness in Schools Project to learn more about it.