Common Core is a set of educational standards for teaching and learning in the United States. Developed in 2009, these standards outline what students should know in math and English language arts at each grade level from kindergarten through high school. The goal is to ensure that all students receive a high-quality education, regardless of where they live. The Common Core State Standards aim to prepare students for college and careers by emphasizing critical thinking, problem-solving, and analytical skills. Many states have adopted these standards, but implementation varies, leading to discussions about their effectiveness and impact on education.