Tech Level Not Rising: Bug or Not?
I don't know if this is a bug or I did something wrong with my city.
I am playing in a region with two other players connected via trains. I decided to focus on industrial while the others focus on residential and tourism.
I have a city with two grade schools, two high schools, and a community college. From what I understand, the grade schools and highschools raise tech to level 1, college to 2, and university to 3. I decided to remain in tech level 2 since we plan on creating a university town on another region on a later date. My tech went up to 2 a few hours after I built my first college but then decided later to move the college since it was creating heavy traffic in it's current position.
After deleting the current college and placing a new college somewhere less traffic-inducing, my tech slowly went down. My industries began complaining and closing down then my nuclear plant became unsafe since it no longer had trained workers. And my tech never went up.
I tried deleting the college and returning it to it's original spot, but the tech no longer went up. One of my friends on another city in the region reported that his tech was also stuck to 1. Did we do something wrong? Is my tech-savvy workforce leaving to work on another city? If so is there a way to know within the game? Or is this simply a bug?