MOOCs (Massive Open Online Courses) are online courses that are aimed at unlimited participation and open access via the web. The first MOOC was developed in 2008 and allowed thousands of students to enroll. While MOOCs are free to participate in, they may have some disadvantages like a lack of face-to-face interaction and technical problems. MOOCs can be relevant for high school students by providing an engaging online platform for teachers and students to share knowledge informally and work collaboratively.