A teacher is a professional who helps students learn and understand various subjects. They create lesson plans, deliver lectures, and assess student progress. Teachers often work in schools, such as elementary schools, middle schools, and high schools, and may specialize in subjects like math, science, or literature. In addition to academic instruction, teachers also play a vital role in fostering social skills and emotional development. They provide support and guidance, helping students navigate challenges both in and out of the classroom. Effective teachers often build strong relationships with their students, creating a positive learning environment.