Education bug? (enrollment drops to ~55%)
I am having the same problem in all of my cities.
At the start, my city is doing great, with up to 200,000 people, and 100% school enrollment.
Then kids just stop going to school.
My enrollment numbers go down to something like 3,200 / 6,100 (always around 50-60%, it seems.) Then industry starts complaining about unskilled workers, and my population goes down.
The thing is, looking at the map, there are no purple bars; just lots of big green bars. At all times of day. The map shows all students enrolled, but the main tally shows a huge gap of unenrolled kids. How can that be?
None of my schools are at capacity. I have lots of school busses and school bus stops. Traffic doesn't seem to be an issue.
Everything was working great with 100% enrollment at the population peak. But the kids just stop going to school? What is happening?
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.