Dr. Dennis Cokely and Cathy Cogen (premier researchers and leaders in the sign language interpreting profession) say it best in their 2015 article regarding current trends in Educational Interpreting: 

“Mainstreamed K-12 Education is inherently a high-risk area of interpreting and should be undertaken only by the most fluent and experienced practitioners. But, unfortunately, poor pay and low hiring requirements attract under-qualified interpreters. Under-qualified interpreters inadvertently undermine development of language competence and contribute to idiosyncratic use of sign language, low literacy rates, and poor academic and social outcomes for many Deaf students.”