I have found that the curriculum teaches UP in grade. I would highly suggest taking their placement test that they offer on their website. The language arts level definitely does not match up to a traditional grade level. I'm not entirely sure why they have set it up this way. It definitely makes things a little confusing for first time homeschoolers when purchasing the curriculum. Again, take the time to do the placement test if you're unsure what grade levels match up to the course book you'll need.