This has been a never ending cycle. The kids aren’t learning, so they changed the meaning of proficiency decades ago. Proficient means (in many districts) that you can read or do math at or better than 2 grades below your own. If you’re in 8th grade if you can do 6th grade math you’re proficient.
Now, fast forward two decades, that 8th grader who could only do 6th grade math becomes a math teacher who - surprise - in not proficient in math.
This has been a never ending cycle.
https://www.gutenberg.org/ebooks/16751
How many high school grads (not Baltimore HS grads!) can comprehend its lessons?