OPI for Teacher Certification

In West Virginia, we have traditionally only accepted PRAXIS II scores to demonstrate content knowledge for certification. Even with the low acceptable score (160-163 depending on the language), we have a very large failing rate. We are considering the addition of the OPI and WPT as a demonstration of proficiency in the language. If anyone uses these tests for certification purposes, can you please let me know the accepted proficiency level and also the acceptable PRAXIS II scores in your state if you use it. Thanks all!!!