The Measurements of Student Progress (MSP), successor to the WASL, was a test taken by students throughout Washington state, ranging from grades 3–8.[1] The SBAC has taken its place.
The MSP tested Mathematics, Science, Reading, and Writing.
Mathematics and Reading were tested in grades 3–8. Science was tested in grades 5 and 8. Writing was tested in grades 4 and 7.[2]
(All of the information comes from this page.)