Teacher

A teacher—also known as a schoolteacher or, more formally, an educator—is someone who helps students gain knowledge, skills, or moral qualities through the act of teaching. While anyone can informally take on this role, for instance by showing a coworker how to do a task, and some countries allow young people to be taught in informal settings like the home, this entry centers on those employed primarily to teach in a formal environment, such as a school or other institution of initial education or training.

A teacher’s duties and the expectations placed on them vary across cultures. They may instruct in reading, writing, math, trades, arts, religion, civics, life skills, or community roles. Formal tasks include preparing lessons based on agreed curricula, delivering those lessons, and evaluating student progress. Beyond the classroom, teachers might lead field trips, supervise study halls, organize school events, or oversee extracurricular activities. They are also legally required to protect students from harm, including bullying, harassment, racism, or abuse. In some systems, teachers handle student discipline.

Teaching is a highly complex social activity, shaped by its specific context—time, place, culture, and socioeconomic conditions—and by the values of that context. What is expected of teachers is influenced by history, tradition, societal views on education’s purpose, and accepted learning theories. Competences required vary worldwide but generally fall into four models: the teacher as instruction manager, caring person, expert learner, or cultural and civic figure. International bodies like the OECD have called for a shared definition of teacher skills, while the European Union identifies three broad competence areas: working with others; working with knowledge, technology, and information; and working in and with society. Scholarly consensus groups teacher requirements into three categories: knowledge (subject matter, teaching methods, curriculum, educational sciences, psychology, assessment); craft skills (lesson planning, using technology, managing students, monitoring learning); and dispositions (values, attitudes, beliefs, and commitment).

Regarding qualities, enthusiasm stands out. Teachers who show genuine excitement about their material and students create a positive learning atmosphere, avoiding rote instruction and refreshing their approach daily—even when repeating the same curriculum, as boredom can spread to students. Enthusiastic teachers receive higher ratings from students and tend to foster more engaged, curious, and energetic learners. Research links teacher enthusiasm to students’ intrinsic motivation and vitality in class. Controlled studies show that nonverbal cues like varied gestures, dramatic movements, and expressive facial expressions boost college students’ motivation to learn, though enthusiasm does not necessarily improve learning outcomes or memory. Mechanisms behind this include creating an energetic classroom climate, encouraging student self-determination, the mere exposure effect shaping expectations, using variety and surprise as motivational embellishment, and emotional contagion, where students catch the teacher’s energy. Student motivation and attitudes toward school are also closely tied to their interaction with the teacher.