And what has that to do with this?

How could asking a specific sed/awk question, clearly looking for a specific solution, possibly help teachers? Were you planning to ask a thousand of them? What next? grep?

If you cared to help teachers, use the appropriate sub-forum here to offer genuine suggestions, or ask us for advice for exactly that - "what can you do to help teachers?". It will gain traction, I'm certain.

For our part we are working on a feature to help students which, in turn, we hope, will help teachers.