All the classes are in English and the tuition is pretty much the same, but charged in euros. It's 28,200 euros as opposed to $34,505 in Washington, if the exchange rate goes above $1.35=euro then SAIS has a mechanism to make sure that you never pay more than that tuition at that exchange rate. If the exchange rate is less than 1.35/euro than you pay the regular equivalent.
The info on the tuition and the exchange rate logistics is here: http://www.sais-jhu.edu/admissions/admi ... Letter.pdf
The letter about Bologna that comes in the acceptance package is here: http://www.sais-jhu.edu/admissions/admi ... Fall09.pdf
Let me know if there are more questions or if anyone else is interested!