Pros
If you play your cards right, and are of the correct oppressed demographic, you will go far. The struggle to succeed at Pearson was like going to graduate school for an MBA in Hard Knocks while being paid a good salary and benefits. I'll be able to use the bruises and scars from this experience to do even better in future endeavors. The benefits are the best I've ever had. The salaries are great, also.
Cons
If you're a white male, plan for a long career in mediocre positions with lots of responsibility, no authority, no budget to accomplish the performance goals assigned to you by your manager, and an appalling lack of follow-through on the part of your manager as to said performance goals. The last time I was part of a decent and useful performance review was when I was the manager doing them with my direct reports. Also, Pearson has a tendency to reorganize itself nearly every year. This habit creates a lot of org chart chaos and keeps anything from truly being settled and operationalized.