DELF is France's official general French proficiency certificate for the A1 through B2 range, and its defining structural feature is a dual scoring safeguard — a candidate needs both an overall score of at least 50 out of 100 and a minimum of 5 out of 25 in each individual skill, meaning one very weak area can block the diploma even alongside an otherwise comfortable overall average. Listening, Reading, and Writing are sat together in one collective session, while Speaking is scheduled individually and shifts from simple conversation at A1-A2 toward structured argument and point-of-view defense at B1-B2. Administered globally through Alliance Française centres and other accredited institutions, and valid for life once earned, DELF serves as the natural precursor to its sibling DALF exam, which picks up the certification range from C1 through C2 for candidates needing advanced or academic-level French proof. Because there's no partial resit for a single underperforming skill, treating every one of the four skills as independently consequential during preparation — not just the ones a candidate already feels confident in — matters more for DELF than for proficiency tests that calculate one fully blended score.