Edutopia provides information on what works in pre-K to 12 education. They welcome pitches on “all academic subjects and grades from pre-K to 12.” They’re always interested in pitches on their core strategies: “tech integration, comprehensive assessment, integrated studies, project-based learning, social and emotional learning, and professional learning.” Finished articles typically range from 850 to 1,000 words. According to a previous post by Edutopia, their rates begin at $100/article. For details, refer to this post and this page.