Yes, children are usually not supposed to use the FS in school work, e-mail to the teacher, or official messages. Although it does not make a problem in informal communication with friends, official communication demands the use of full words and proper language. Educating children on the distinction between informal and formal writing contributes to the development of effective communication. It is better always to use the term For sure instead of FS in a formal context. Visit Now: https://saferloop.com/fs-meaning/