Part-time teachers work with students to educate them on a variety of subjects. Unlike full-time teachers, part-time teachers work thirty hours or less per week. They sometimes split classroom duties and hours with another part-time teacher. Job duties for part-time teachers vary, depending on the grade they teach and their specialty. Preschool teachers typically work with kids from ages two to four and work on building blocks of education, such as the alphabet, colors, and basic shapes. From grades kindergarten through twelfth grade, part-time teachers continue the educational progression of students through grammar, math, science, and history, as well as life skills, which prepares students for college and the workplace.