With earnings results announced from most of the publicly-reporting companies with trade publishing divisions, we’ve assembled a little chart of the recent summer school grades. The primary drivers of success in the current marketplace are either a) Stephenie Meyer or b) currency exchange. When underlying businesses are strong most companies will tell you that foreign exchange doesn’t matter that much to them but in a declining market the impact–both positive and negative–becomes more prominent. PublishersLagardere +10.4% (FX was marginal; rest of year comp will be lower due to Stephenie Meyer)Harlequin +8.7% (all FX)S&S -2.5% (“principally” FX)Penguin +11% […]