Concealed Carrying is prohibited.

No, it is prohibited to have a gun at a school.  See https://app.leg.wa.gov/rcw/default.aspx?cite=9.41.280

Stay over 1,000 feet away if you are concealed carrying.  If you are picking up a student, you may concealed carry within your car, but don’t even think of getting out of your car with your gun on you.

No, this is prohibited.  Though a courthouse may be able to store your gun for you at the security checkpoint.  Do call in advance to confirm this otherwise you may break the law by entering the building.

No concealed carrying here.

It’s okay to concealed carry at airports, but don’t even thinking about going anywhere near the TSA security checkpoints.

No concealed carrying here.

Concealed carrying is prohibited.

No, a concealed carry permit is required in Washington State.  In Washington, it’s called a CPL or Concealed Pistol License.

Within Vancouver City limits visit https://www.cityofvancouver.us/government/department/vancouver-police-department-vpd/concealed-pistol-licenses/

In Clark County visit https://clarkwa.permitium.com/ccw/start

If a business has a sign that says no weapons allowed, you are not breaking the law by entering.  (Unless possession of a handgun is prohibited by law otherwise.)  But if you are asked to leave, you must comply.