LearnZillion develops a platform to help teachers, schools and districts implement the Common Core State Standards by providing a digital curriculum with lessons. Teachers and parents can get access to the platform for free, while schools and districts are required to subscribe. Offers teachers and parents access to the examples of lessons created for particular subjects and allows them to share it with others. Had 120k+ teachers registered for its platform and reached 1.4M students as of April, 2013. LearnZillion offers 5,000 outstanding, free Common Core lessons for grades 2-12.