5W：2026年教育科技AI可见度指数报告（英文版）

For twenty years, online education was an SEO business. Chegg, Course Hero, Coursera, Udemy, Khan Academy, and every tutoring platform in between built distribution on the same playbook: produce educational content at scale, rank on Google for "how do I solve x," convert that free traffic into paid subscriptions or enrollments. That playbook produced billion-dollar companies. Chegg reached a $13 billion valuation. Course Hero became a $3.6 billion unicorn. Guild Education hit $4.4 b