Got the reply from DYS. WIAT-III is acceptable achievement test. They just haven't updated their website yet.

Belin-Blank Center also sent the following information regarding EXPLORE test. We can have the so-called arranged testing. It means we need to find a non-family licensed teacher who is willing to be proctor. We can then register by phone, and the test material will be send to the teacher. The cost for arranged testing is $75 that also includes the shipping cost.