Schema markup can help improve a site's visibility in search results by providing additional information to search engines. Sites that use schema markup to enhance their content are more likely to rank higher in search results. Site speed The role of the teacher is changing in the 21st century. Teachers must not only impart knowledge and skills, but also act as facilitators of learning, mentors, and guides. They must be adept at using technology, creating a positive learning environment, and fostering a love of learning in their students.