I'm a high school teacher, and during the summer when I'm not teaching I do more around the house because I have more time. Then every August when I go back to work, I have to have a heart to heart with my husband to remind him that I need more help around the house. He's wonderful about helping as long as I remind him what I need him to do. Perhaps you just need to have a talk with your husband and let him know what you need.
As far as how we divide things, here is roughly how things work out during the school year (my husband works very long hours). We have two boys ages 13 and almost 7 that are very helpful as well, and they get themselves up and ready for school each morning.
My duties:
Pick up kids from school and care for them in afternoon/evenings
Maintain cleanliness of house (dust, vacuum as needed, sweep)
Cook meals
Start dishwasher
Husband's duties:
Take kids to school
Clean house once a week (mop/vacuum all floors, clean bathrooms, etc. - he doesn't dust)
Put away dishes (13 year old does this often)
Both of us do laundry and yard work, and the kids help keep the house neat. Our 13 year old does much of the vacuuming, too. Our boys take care of the pets.
I hope you and your husband are able to find a solution that works for both of you. :)