We Korean English teachers need native speakers who have much knowledge like you.
We think you're the best in proofreading.
We've seen many of native speakers don't know grammar exactly.
If we have to employ one teacher between you and another NET, we'll choose you. And if you need recommendation letters when you get a job in other country, we'll give you the most score.
We know you have more work than other NETs do.
But could you help our work second semester in the way you did this semester?
We are really sorry that you do more work than other NETs do. But we put more value on you.
But if we need your help and your work hours are over 22 h average a week for which native speakers are supposed to work, we won't give you work.
We always appreciate your help.