Pros
The company attracts many people who are committed to producing high-quality educational materials and their enthusiasm is contagious. The company also is willing to invest in continually improving products and responding to the market, so you feel like you're working on the "winning team." Also, many managers are supportive of flexible schedules and the company overall has policies to support work-life balance.
Cons
It's an enormous company and as a result there are some systems and processes that actually impede productivity. The culture makes it hard to move quickly and make necessary changes. Management sometimes errs on the side of trying to get consensus or make change democratically, when sometimes we might be better served by a more clear vision and an authoritative and speedy execution of decisions and organizational changes.