Levels of Writing

Writing to communicate is reader-based prose, transactional, aimed at a group audience which may be known or unknown, designed to convey [“show what you know”] information, opinions, etc. [Level 2 and Level 3]

Writing to learn is writer-based prose, expressive, often aimed at the self or close friends, “trying on” different concepts or poses, designed to explore and discover [Level 1 writing]

Level 1:
writing to remember, sort out thoughts, organize;
forms include note taking, freewrites, logs, journals, first drafts;
uses instinctive spelling and punctuation, casual grammar; never evaluated except for content or use of process

Level 2:
informal but communicative, aimed at others;
needs vocabulary, grammar, delivery that does not impede communication but need not be flawless;
forms include in-class exams, homework, intermediate drafts;
usually evaluated for clarity of thought, organization and knowledge, with some attention to common writing conventions

Level 3:
formal and polished writing that has gone through all stages of the writing process;
forms include letters, reports, research papers, final drafts;
correctness in writing conventions and editing skills important, in addition to content and organization