I should warn you though, depending on which side you lean politically, you may or may not agree with the direction Seattle public school district is headed with its gifted program. Specifically, there is now a district wide push to end all differentiated instructions for the Advanced Learners/Spectrum program in all Seattle elementary schools. One middle school, WA Middle School, has already started its detracking program for its 6th grade Spectrum, and will move on to detrack 7th grade next year. Thankfully the Highly Capable program remains untouched -- for now.

http://www.seattletimes.com/education-lab/an-effort-to-raise-achievement-by-dismantling-de-facto-segregation/

If liberal politics is not your cuppa you may want ditch the Socialist Republic of Seattle and move to the East Side. Bellevue School District is excellent and has probably the best gifted program in the state.