Self-assessment in an educational setting involves students making judgments about their own work. Assessment decisions can be made by students on their own essays, reports, projects, presentations, performances, dissertations, and even exam scripts. Self-assessment can be extremely valuable in helping students to critique their own work, and form judgements about its strengths and weaknesses. For obvious reasons, self-assessment is more usually used as part of a formative assessment process, rather than a summative one, where it requires certification by others.