Debra is the author of the "Readers in Residence" and "Writers in Residence" language arts curricula. She also leads AIM Academy, which provides online classes for high school students. Classes include SAT, CLEP and AP test prep, along with several other subjects. Debra also publishes several printed planning tools. *A note about religious content: I have never used these materials, so cannot say what sort of religious perspective they contain. The language arts curriculum is published by Apologia (a company that publishes young earth science materials) and the website mentions that classes are taught with sensitivity to "the concerns of religious and conservative families."
This site has a library of science activities and lessons, plus links to many other websites.
These learning kits on different countries are designed to promote global citizenship.
Self-paced, online coding classes for ages 7 to 15.
This site provides group buys for homeschoolers.
This is a wonderful website from Stanford Math Education Professor Jo Boaler.
This is the organization that publishes Poetry Magazine.