Pros
The only pro is that K12 is trying to make a difference in children's education, and most customers seem happy. However, the pros essentially stop there.
Cons
Communication is dead. Emails go into a black hole with no response. Other employees seem to skirt responsibility by avoiding you, i.e. collaboration is non-existent. There are seemingly dozens of Vice Presidents, which dilutes the effects of leadership. Executives ignore employee feedback and avoid issues that everyone is disgruntled with, pretending that the issues will go away if ignored. Everyone is told that K12 can't afford to give raises, but it's well known that some people are getting them and it's a public company, we can all see the millions in cash the company is raking in. Most people haven't had a raise in three years while executives are reaping huge bonuses and giant salaries. Overall, the company culture is poisonous, although there are a few people who are a pleasure to work with. Money is wasted continuously (i.e. flying people all over the country when work can be done from the office), which frustrates people when they are told there is no money for even cost of living raises.