A thread got started elsewhere on transportation costs because there seems to be a lot of unknowns about them. I had access to numbers when I was on the Closure and Consolidation committee and I'll try to go find them (down in the garage...in a box...somewhere).
However, I did find a few things of interest. (I am putting dates in bold so that you will note that none of this information - even if still valid - came from a present-day source.)
This is an article that appeared in the Seattle Times written in 2004 that gives some background but I don't know if these numbers are still valid (they likely are since not much as changed in transportation/assignment except that a couple of alternatives were made regional instead of all-city draws).
An article from the PI dated 2006 about transportation costs.
A pdf by district staff from student assignment discussions in 2005. This one is interesting because it has a chart showing alternative school assignments (but doesn't say what would/could happen if you wanted a different alternative):
AS 1 - NW, NE, QA/Mag
AE 2 - NE
Orca - Central and South
Pathfinder - SW
Salmon Bay - NW, QA/Magnolia
TOPS - Central
Now the chart says that these are alternative K-8s but I don't think AE 2 is K-8. (They don't mention Summit either but that could be because it is an all-city draw or because they want to get rid of it - staff suggested this before.)
I think, as a post mentioned before, that the district needs to get its terms straight. How do they classify a school alternative versus non-traditional versus neighborhood (but seemingly non-traditional a la John Stanford or New School) versus Safety Net? I agree that maybe magnet might be a great term to use.
If we have to wait longer for a new assignment plan, then the district has the opportunity to suss out these kinds of things and ASK parents what they want.