What is a field harmonic?

Question:

What is a field harmonic?

My daughter has been playing the violin for several years. Her music teacher recently called me and said that my daughter is too advanced for her class and wants to advance her to field harmonic.

I have no idea what a field harmonic is and how it is related to the violin. Can you guys explain it to me please?

Thanks.

Additional Details

8 months ago
I did not agree, I told the teacher I will think about it and talk to my daughter. And yes, I must have misunderstood, so it must have been philharmonic.

Best Answer - Chosen by Asker: 8 months ago
I did not agree, I told the teacher I will think about it and talk to my daughter. And yes, I must have misunderstood, so it must have been philharmonic.