Homeschooling is your best option unless you can afford private. Public school should be your last choice.
I was raised here and went to college in Washington. I received a good, not great, education. After being moved around the country we made our way back here to finish raising our kids. 12, 10 & 7 at the time. We initially put them in the public school. Shortly we brought them home to homeschool. Finally, I and 3 other fathers started our own private school, Paideia Classical School in Friday Harbor. That was 10 years ago and though very difficult and not for everyone, it was the best thing I could have done. At least my youngest was able to benefit from it.
Washington is a very liberal State and suffers from many of the same things that you read about at schools back east. There are very few public school systems that will suit you if you are conservative or worse yet, Christian. Just my $.02.