If you're looking for easily accessible resources for your classroom, then you're in the right place. This list collects web-based learning tools that are completely free. Even so, they still get high marks from our editors for engagement and pedagogy. If your school or district is strapped for cash, you can still meet students' needs going with these cost-effective yet top-quality websites. We've curated them for each of the core subjects and all grade levels, so whether you're teaching elementary school, middle school, or high school, or focusing on arts, math, ELA, science, or social studies, you're sure to find something you can use with little hassle.