This site and the one below is helping us tremendously with home education. It has the lesson and some of activities, and then the test ranging in various subjects. There are grade levels below. I love the games for K and 1 st grade
http://www.bbc.co.uk/schools/ks1bitesize/
http://www.bbc.co.uk/schools/ks2bitesize/
http://www.bbc.co.uk/schools/ks3bitesize/
http://www.bbc.co.uk/scotland/learning/bitesize/standard/
http://www.bbc.co.uk/scotland/learning/bitesize/higher/
http://www.bbc.co.uk/schools/gcsebitesize/science/
This one we are using for high school
With this link it also has sites to visit for primary and secondary
http://www.bbc.co.uk/schools/