I have had students discover on the morning of a test that their laptop will not run Bluebook. It is a bad way to find out. College Board raised the minimum operating system for the 2026-27 school year, and a laptop that worked fine for a practice test in the spring can be locked out now.
This takes about a minute to check. Do it today, not on Saturday morning.
What your device needs
| Device | Minimum required | What that rules out |
|---|---|---|
| Windows | Windows 11, version 24H2 | Every Windows 10 machine |
| Mac | macOS 15 | macOS 14 Sonoma and older |
| iPad | iPadOS 18 | iPadOS 17 and older |
| Chromebook | ChromeOS 144, verified mode on | Older builds, and any managed Chromebook with verified mode off |
These are the minimums published by College Board on its Bluebook technical requirements page. There are also recommended maximums, currently macOS 26.5.2, iPadOS 26.4 and Windows 11 26H2, which move up through the year as College Board certifies new releases. In practice the maximum is rarely the problem. The minimum is.
How to check, by device
Windows
Press the Windows key, type winver, and press enter. A small box shows your version. You are looking for Windows 11 and a version number of 24H2 or higher. If it says Windows 10, that machine cannot be used, and there is no setting that changes it.
Mac
Click the Apple menu in the top left, then About This Mac. You need macOS 15 or higher. If you are on macOS 14 Sonoma or older, check whether your Mac can even update: macOS 15 needs a MacBook Air from 2020 or later, a MacBook Pro from 2018 or later, an iMac from 2019 or later, an iMac Pro, a Mac mini from 2018 or later, a Mac Studio, or a Mac Pro from 2019 or later. Anything older than that cannot be updated and cannot run Bluebook.
iPad
Open Settings, then General, then About, and look at Software Version. You need iPadOS 18 or higher. You also need a physical or Bluetooth keyboard for the free-response questions if you want to type comfortably, though the on-screen keyboard works.
Chromebook
Open Settings, then About ChromeOS. You need version 144 or higher. School-managed Chromebooks have a second problem: Bluebook now requires verified mode, and if your school has it switched off, the app will not run. That is not something you can fix yourself. Ask whoever manages the devices, and ask early.
If your device is too old
You have a few options and none of them work well the night before.
- Update, if the device allows it. Free, but a major OS update can take an hour or more. Do it on a day that does not matter.
- Borrow one. A parent's work laptop, a sibling's iPad, a friend's machine. Install Bluebook and complete a practice test on it beforehand so you are not learning the interface under time pressure.
- Ask your test center. Some centers have loaner devices, and requests usually have a deadline well before the test. Call and ask rather than assuming.
Two other things that stop you on the day
Update the Bluebook app itself. College Board pushes required updates, including one on September 3, and Bluebook will not open on an old version. Launch the app once, let it update, and confirm you can sign in. Doing this the night before is fine. Doing it in the parking lot is not.
Take a practice test on the exact device you will bring. This catches the problems a version number does not: a dying battery, a broken trackpad, a school profile that blocks the app. Bluebook has full-length practice tests, and if you have already used those up, our free full-length practice test runs in the browser with the same two adaptive modules.
The short version
Windows 11 24H2, macOS 15, iPadOS 18 or ChromeOS 144. Check it now, update if you need to, then open Bluebook once to let it patch itself. Five minutes today beats finding out in the exam room.