One in Sixty, I have to point out a misconception in your answer that is rather alarming if you have not passed met yet.
A cold front is not in a high pressure area! In fact active fronts are all associated with depressions. The upmoving air of the low pressure region is what allows thick cloud banks to form. The situation with a jetstream also certainly does not change between cold and warm fronts. Going from high temperature to low the aircraft is passing from the warm sector to the cold, and in the northern hemisphere the frontal jetstream, which is just underneath the warm-sector tropopause in the warm sector, close to the front, blows with the cold sector to its left. Therefore if you are crossing to the cold sector the jet is blowing from the left.
Remember that the definition of a front as warm or cold is determined only by the direction of movement of the airmasses at their surface expression, not by the jet across the airmass.
If you need a diagram of this description and can't find the appropriate one in your own books then send me an email address and I will try to get you something from our manual.
Oh, and don't quote me on it, it's not my subject, but I believe you can have a (weak) front without a jetstream. Jetstreams must be moving at greater than 60 kts, and while there will always be a similar wind aloft it may not be fast enough for the definition.
Send Clowns
General Navigation Instructor
BCFT
P.S. Everyone else is correct, except the alleged JAA answer. The drift is to starboard.