I came across some more sample standardized tests online:
Here is grade 8:
To get grades 3-7, simply replace the “8” only with 3, 4, 5, 6, or 7 to get the urls for the other grades.
If you are a member of the IHSU library, these are available in the library as well.
I use these standardized tests for reading passages for our reading classes, moreso than for state testing, but if you are looking for standardized testing practice, they are great.