Yeah I personally find some of the resources lacking and I personally use a paid for curriculum for my son It is low cost K-8th grades is $19.99 a month and high school is $30 a month, so it is a low cost affordable option for us. But we also use some free resources too as the site we use only really offers core courses with very few electives. And though some of these sources I don't use because I think they are lacking, they are better than nothing for those who don't have any resources to work with and need 100% always free bases curriculum to work with.