Essai vs. rédaction vs. dissertation

When discussing written compositions in French, the terms 'essai', 'rédaction', and 'dissertation' each refer to specific types of text. The nuances among these three can be related to length, formality, and context in which they are used.

Essai

An 'essai' typically refers to a short piece of writing on a particular subject, often presenting the author's personal point of view. It is less formal than a 'dissertation' and is commonly used in literary or philosophical contexts.
Michel de Montaigne est connu pour ses 'Essais' qui explorent divers sujets de la condition humaine.
(Michel de Montaigne is known for his 'Essays' that explore various topics of the human condition.)
Pour ma classe de philosophie, j'ai écrire un essai sur la liberté.
(For my philosophy class, I had to write an essay on freedom.)

Rédaction

A 'rédaction' is generally an exercise in writing often assigned in an academic setting such as a school. It tends to be shorter and less formal than a 'dissertation' and can cover a wide array of subjects.
Les élèves de cinquième ont une rédaction à faire pour demain sur leur animal préféré.
(The fifth-grade students have a composition to write by tomorrow about their favorite animal.)
La rédaction en français portait sur mes vacances d'été.
(The writing assignment in French was about my summer vacation.)

Dissertation

In French academic context, a 'dissertation' is a long, formal piece of writing on a particular subject, especially one that is written for a university degree. It involves extensive research and follows strict structural guidelines.
La dissertation de philosophie est redoutée par de nombreux étudiants en France.
(The philosophy dissertation is dreaded by many students in France.)
J'ai passé tout le weekend à travailler sur ma dissertation en histoire contemporaine.
(I spent the entire weekend working on my contemporary history dissertation.)

Summary

In summary, an 'essai' offers personal reflections and tends to be literary in nature, while a 'rédaction' is generally a shorter school assignment covering various topics, and a 'dissertation' denotes a structured, formal document typically required for advanced educational degrees. Understanding the specific connotations of these French terms ensures appropriate usage in educational and literary contexts.