Managed Apple Accounts no longer allow a separate personal App Store account (Apple School Manager + Jamf School)

This reads like a chatbot completion, structured headings, perfect formatting, and zero engagement history. It’s fine to use AI to clean up posts, but if you don’t go back and refine, we can’t tell if you’re a person or ChatGPT.

Apple MAIDs have never been able to purchase apps, and iPadOS has always synced the signed‑in account in Settings with the App Store. Nothing new here.

Also, the use of BOLD.  Always a giveaway…   🤓

Yes, the AI helped summarize the problem clearly. :-) 

I’m aware that Apple MAIDs can’t download apps. But at least it was possible to use a personal account in the App Store at the same time to download apps on your own.   

Students now have to log out of the Managed Account and log into their personal account every time they want to install personal apps. 
That can’t be what was intended.  

The devices belong to the students, so we can’t—and don’t want to—prohibit them from installing their own apps.

I would not call what you posted a summary. It is a straight read out. I did not even bother reading half of it. I went directly to the “The Issue” section because that is the part a bot would actually get right, and that is what I used to make my response.

We have to be careful when using bots. They are force multipliers only when the person using them already understands the domain. They are not good at teaching us unless we know exactly what to ask.

On the App Store side, in the past there was an option to sign out inside the App Store itself. That let you sign in with a different Apple ID. To the best of my knowledge Apple removed that some time back. The most recent mention I am seeing in Apple documentation is Ventura era.

As far as your questions directly:

Is this new behavior intended by Apple? Not that I am aware of. Apple has not announced any change here and nothing in their documentation suggests a shift.

Is there a setting in Apple School Manager, Jamf School, or the ADE profile that controls this behavior? ASM and ADE have nothing to do with App Store identity. Jamf can be ruled out by testing on a non managed device. If the behavior is present on an unmanaged device, it is not coming from configuration profiles.

Has anything changed in recent versions of iPadOS? If you want to know what changed, read Apple’s OS update documents. Apple publishes changes in each build in AppleSeed before release and on the security update page after release. Major behavioral changes usually happen in September and with the x.3 release. I have not seen anything documented that relates to App Store identity.

Is it still possible to use a Managed Apple Account for device services while using a separate personal Apple Account for the App Store?

I do not see the option on my test devices. The App Store does not have a sign out option on either managed or unmanaged devices. Since the option is gone on an unmanaged device, that rules out configuration profiles and puts this squarely in Apple support domain.