Online schools also can provide support to traditional schools, as in the case of the School Net Namibia. Some online classes also provide experience in a class. When people take them, they have already been introduced to the subject and know what to expect. Classes provide high school/college credit, allowing students to take the classes at their own pace. Many online classes cost money to take, but some are offered free.Internet-based distance learning programs are offered widely through many universities. Instructors teach through online activities and assignments. Online classes are taught the same as in-person, with the same curriculum. The instructor offers the syllabus with their fixed requirements like any other class. Students can virtually turn their assignments in to their instructors according to deadlines. This being through via email or on the course webpage. This allows students to work at their own pace yet meet the correct deadlines. Students taking an online class have more flexibility in their schedules to take their classes at a time that works best. Conflicts with taking an online class may include not being face to face with the instructor when learning or being in an environment with other students. Online classes can also make understanding the content challenging, especially when unable to get in quick contact with the instructor. Online students have the advantage of using other online sources with assignments or exams for that specific class. Online classes also have the advantage of students not needing to leave their house for a morning class or worrying about their attendance for that class. Students can work at their own pace to learn and achieve within that curriculum. The convenience of learning at home has been an attraction point for enrolling online. Students can attend class anywhere a computer can go – at home, in a library, or while traveling internationally. Online school classes are designed to fit a student's needs while allowing students to continue working and tending to their other obligations. Online school education is divided into three subcategories: Online Elementary School, Online Middle School, Online High school. Stress As a profession, teaching has levels of work-related stress (WRS) that are among the highest of any profession in some countries, such as the United Kingdom and the United States. The degree of this problem is becoming increasingly recognized and support systems are being put into place. Stress sometimes affects students more severely