Every year, several thousand candidates submit an admission sur titre (AST) application to schools belonging to the Conférence des Grandes Écoles 🔗 and to other institutions running their own selection processes. Of that volume, the cover letter is often the least polished document in the file - even though, along with the resume, it's the main written support the panel relies on before the interview.
What the panel evaluates in an AST cover letter
An AST selection panel isn't looking for a letter that's perfectly written in a literary sense, but a text that convincingly demonstrates three things: the coherence of the path followed so far, the solidity of the intended professional project, and a genuine understanding - beyond rankings - of the targeted school or program. A letter that could be sent unchanged to any other school immediately signals a lack of preparation.
Expected length stays short: one page, rarely more, structured to be read in three to four minutes at most. The panel reads dozens, sometimes hundreds, of similar letters in a single session; the ability to get to the point matters as much as the content itself.
💡 Alongside the resume, our guide on writing an academic resume for an AST application covers the method to apply to the file's other key document.
Four-part structure: hook, background, project, conclusion
The hook. Avoid generic phrasing ("Passionate about [field] since always...") that adds no differentiating information. Favor a precise fact, an experience, or a concrete trigger that explains the choice of parallel admission - an internship that revealed an interest, a standout academic project, or a well-argued realization about the limits of a prior path.
The background. This section shouldn't summarize the resume already attached to the file, but explain the logic connecting the steps followed. Why this BUT, this bachelor's, or this BTS? What did this path offer that the traditional route wouldn't have? A panel particularly values candidates able to own an atypical path rather than present it as a mere detour.
The project. This is often the weakest part of the letters received. "Becoming a manager" or "working in finance" aren't precise enough to count as projects. A credible project names a sector, possibly an intended role or specialization, and rests on a concrete element (internship, professional encounter, specialized reading) that justifies the choice.
The conclusion. Brief, it restates motivation for the specifically targeted school - citing, where possible, an element specific to the program (end-of-cycle specialization, project-based teaching, an alumni network in a given sector) - without reciting a list of superlatives about the institution's reputation.
📊 For two concrete applications of this method, see our dedicated guides on the AST cover letter and interview at emlyon business school and the AST cover letter and interview at INSA Lyon.
Adapting your letter: business school or engineering school
Business schools generally expect a letter that highlights personal initiative, entrepreneurial or associative experience, and a certain ease projecting into an international, business-oriented environment. The tone can be slightly more direct, even commercial in form, without tipping into excessive self-promotion.
Engineering schools place more value on the rigor of the reasoning and the technical coherence of the project. A letter for parallel admission to an engineering school benefits from mentioning concrete elements - a supervised project, a technical internship, an end-of-cycle specialization of particular interest - rather than general qualities that are hard to verify.
In both cases, tailoring each letter to the targeted school remains essential: a panel immediately spots a letter recycled from one application to another, which directly harms the credibility of the file, regardless of the quality of the background presented.
Proofreading and getting a second opinion before sending
However well-built a cover letter is in substance, it loses much of its force if it contains spelling mistakes or awkward phrasing - a panel immediately reads this as a lack of rigor, hard to reconcile with the standard expected at a business or engineering school. Reading the letter aloud often helps catch overly long sentences or repetitions that a silent read-through lets slip by.
Having the letter reviewed by someone outside the project - a teacher, a professional in the targeted field, or simply someone unfamiliar with the candidate's background - offers valuable perspective on how clear the text really is. If that person doesn't immediately grasp why the candidate is targeting this specific school, chances are the panel won't either. Scheduling this review step several days before the submission deadline, rather than in the final hours, leaves enough time to rework passages that still lack clarity.
Mistakes that disqualify a file
- An identical letter sent to several schools, recognizable by a poorly changed institution name or references too generic to be specific to a program.
- A missing or overly vague professional project, which suggests the application rests solely on the school's reputation rather than a well-considered choice.
- A letter that simply restates the resume without adding complementary insight into the candidate's motivations.
- Excessive politeness formulas or an overly casual register, which throws off the expected tone for this type of document.
- No mention whatsoever of the targeted school beyond its name in the header, an immediate sign of insufficient preparation in the panel's eyes.
A well-structured letter deserves formatting to match: a dense, poorly spaced, or hard-to-read document hurts the first impression before the panel even engages with the content. FinanceCV lets you generate a polished cover letter and an ATS-compatible resume, so that only the substance of your application makes the difference.
Ready to write your AST cover letter? Generate it for free at /lettre-de-motivation.