# Publish a syllabus version, and change it later > Publishing locks a version forever. To change a published syllabus you create a new version, publish that, and retire the old one. Students already enrolled finish on the version they started. Source: https://www.aerscheduler.com/docs/training/publish-a-syllabus-version Section: Training and curriculum. For: Owners, Admins. Open the course with the draft selected and click **Publish**, then **Publish and lock**. Publishing freezes that version forever and there is no unpublish. To change a published syllabus you click **New version**, edit the copy, publish that, and **Retire** the old one. Students already enrolled finish on the version they started. **Who can do this:** Owners, Admins, holders of the Configure training grant ## What publishing locks Everything the version owns: - every stage, and its stage settings - every lesson, its hours, objectives and completion standards - every task and ACS code - every requirement, including the simulator, transfer and recency limits - the grading scale All of it becomes read-only, permanently. This is the one irreversible act in the training module. The enrollment fee is the exception, because it belongs to the course rather than to the version. A price is a commercial decision, not part of the document you file, so you can change it whenever you like. See [Charge a course enrollment fee](https://www.aerscheduler.com/docs/training/course-enrollment-fee). ## Publish a version 1. **Open the course and select the draft** On a course with more than one version, check the version dropdown in the header. It governs everything below it, and publishing the wrong revision is not undoable. 2. **Click Publish** 3. **Read the warning** It names how many lessons are about to be frozen, along with their tasks and requirements. If that count looks wrong, you have the wrong version selected. ![Publish confirmation dialog](https://www.aerscheduler.com/docs/syllabus-publish-dialog.png) 4. **Part 141 only: enter the FSDO approval reference** Optional. It is stored against the version as the Training Course Outline reference you filed with your POI. Nothing depends on it. 5. **Click Publish and lock** **Keep editing** backs out with nothing changed. A version has to contain at least one lesson before it can be published. Publishing an empty one is refused with "Add at least one lesson before publishing this version." > **Important:** There is no unpublish, on any screen, for any role. Read the lesson names once more before > you click. A chief instructor who publishes with a typo in a lesson title lives with it > until they cut a new version. ## Why a published syllabus has no edit controls After publishing, the header badge changes to **Locked** and the syllabus editor is replaced by a plain read-only page: no pencils, no Add buttons, no trash icons anywhere. That is deliberate. Thirty greyed-out pencils read as a broken page, so the controls are removed rather than disabled. Nothing has failed to load. The header actions change too: **Publish** is replaced by **New version** and **Retire**. ![Course header, locked badge and version dropdown](https://www.aerscheduler.com/docs/syllabus-published-locked.png) ## Change a published syllabus: create a new version 1. **Open the course with the published version selected** 2. **Click New version** 3. **Type a version name** "Rev B", "2026.1". It has to be unique within the course, or you get "This course already has a version called ...". 4. **Click Create draft** Every stage, lesson, task, requirement and the grading scale are copied into a new editable draft. The published version, and everyone enrolled on it, are untouched. 5. **Edit the draft, then publish it** Same dialog, same warning, same permanence. 6. **Retire the old version** So nobody new is enrolled on it. ## Retire a version so nobody new joins it Select the published version and click **Retire**. The confirmation says it plainly: no new students can be enrolled on it, and anyone already on it finishes on it. Retiring is fully reversible. The button becomes **Un-retire**. Enrolling on a retired version is refused with "This version has been retired. Enroll on the current version instead; students already on this one finish on it." > **Note:** Retiring applies to a version, not to a whole course. There is no control that removes a > course from the Training page, so a course you have stopped teaching stays in the list with > all its versions retired. ## What happens to students already enrolled Nothing. That is the point of versions. - A student enrolled on Rev A stays on Rev A, is graded against Rev A's lessons and Rev A's grading scale, and graduates against Rev A's requirements. - They are never migrated to Rev B, and there is no supported way to move them across. - Publishing Rev B, and retiring Rev A, changes nothing on their record. > **Tip:** If you need one student on the new syllabus, end their old enrollment and enroll them on the > new version. Everything already recorded on the old enrollment stays exactly where it is. > See [Graduate a student, or end an enrollment](https://www.aerscheduler.com/docs/training/graduate-or-end-an-enrollment) > and [Enroll a student](https://www.aerscheduler.com/docs/training/enroll-a-student). ## Part 141 has one extra rule Under Part 141 you cannot enroll anybody until the version is published. Under Part 61 you can enroll students against a draft, which is convenient while you are still writing the syllabus and dangerous afterwards, because the draft can change under them. See [Part 61 vs Part 141](https://www.aerscheduler.com/docs/training/part-61-vs-part-141).