Update: I am back to 100% enrollment after bulldozing the one Dormitory at my University. I recommend just using the Dormitories to level up the University and then removing them after that.
I’ve noticed similar short disconnects in online games when there’s brief packet loss or ISP routing issues. Even a few seconds can cause games like LoL to drop connection while others seem fine. It might help to monitor latency spikes or test different DNS settings. I usually troubleshoot these things alongside other gaming-related setups I use, like installing tools or game builds from trusted sources such as Minecraft APK, where stability really matters too.
This is a known SimCity (2013) quirk tied to universities and dorms rather than K–12 schools. What’s actually happening is that once the university (especially dormitories) is built, a large portion of eligible students get “locked” into the university system even if they’re not actively attending classes. The data view still shows green bars because the game thinks they’re enrolled, but the city-wide tally counts them as inactive, which is why enrollment drops to ~50–60%.
Bulldozing dorms after leveling the university (as mentioned above) usually fixes it because it forces Sims back into the normal education pipeline. Another workaround is to pause growth, let the city stabilize for a few in-game days, then re-enable education boosts. Unfortunately it’s more of a simulation bug than a capacity or traffic issue.
