OpenEd offers standards aligned K-12 resources, tailored for each student based on assessment results. With over a million assessments, homework, videos, games, and lesson plans, teachers can find just the resource they need, and be guaranteed that it is standards aligned and of high quality. OpenEd has the only free formative assessment bank that teachers can assign to their students. Depending on which questions each student answers incorrectly, OpenEd returns the exact video or game the student needs to watch in order to master that specific learning objective. OpenEd also studies the effectiveness of each resource, using that to suggest the best video for each student.OpenEd is used directly by over 350,000 teachers and reaches millions of students. OpenEd's API is used by ed tech leaders such as Renaissance Learning, Microsoft, Chalkable, Agilix, Pacific Metrics and many more to add OpenEd's standard aligned resources to their own tools.