A high school cosmetology instructor works with high school students who have an interest in the cosmetology field. You carry out your duties in vocational and technical schools for students that want to learn a trade. Your responsibilities are to teach students and demonstrate how to apply makeup, shape and color nails, apply gel and acrylic nail tips, and cut, style, shampoo, condition, and color hair. You also teach students proper safety and cleanliness skills, assign homework and classroom assignments, and evaluate student progress through observation and graded assignments and tests. These are full-time positions during regular school hours.