About the book: 1967 / Miss Boltz worked as a teacher on Mars for 25 years, and then flew to Earth to continue working here. But during this time, a revolution has occurred in the work of the earthly teacher, and now teleeducation is used everywhere. Students don't go to school. They watch and listen to lessons on TV at home. No essays or exams. And to evaluate the teacher’s work, the Tendex indicator is measured once every two weeks.© Ank