This company publishes a few unit studies on topics related to American government and writing, designed for use by jr. high and high school level students. They have a Charlotte Mason/Classical feel to them and appear to be well written and thorough. There is also a blog with other ideas for lessons and activities.
Online, interactive program for learning music reading and theory.
This non-profit organization offers over 100 free self-paced, online, college level courses.
This online math program is designed to help students with math problems (including dyscalculia.)
This hands-on grammar curriculum includes CD ROMs, teacher manuals, and games for learning gramma
Online, super-hero themed science games for elementary and middle school levels.
This program includes videos, worksheets and quizzes for history learning in jr.