I've done rather well using the PSO espp to buy PSO stock at a discount relative to what my earnings are. I basically use linear regression, and have some added confidence by the terms of the program. I know that Pearson does not pay its experienced, valued employees much more, at all that its newbies; and with this knowledge, I follow publicly made posts to see if they have minimized the activities that were a headwind in the past. It seems like a decent gamble for me using the espp, although I am not an experienced analyst, and should not make a qualified value judgement. I do know that Pearson is benefiting from a very modestly paid labor force that meets an unusually unpredictable dynamic schedule to fit the needs of the clients who pay well for testing appointments. Although the test centers are only a part of Pearson's revenue, it is substancial, and has been a huge part of its success. Pearson should remember this when adjusting wages, if they hope to keep many of its best employees.