<human>: Give me the gist of the text in a nutshell

I'm in college, and I have been taking Beginning Guitar all semester.  I have never played guitar, but I'm very knowledgable in music and sight reading because I have taken piano for 12 years.

I got my guitar test back today, and let me tell ya, I was shocked.  Everything was correct except for one section.
With guitar, each string is given a number, 1-6.  On the test we had to identify a note on the staff and label it with its string and fret.  Name of the note? Nailed it. Fret? No problem! String number? EVERY SINGLE ONE was marked wrong. This was because I accidentally flip-flopped the string order.  Had I reversed the strings, EVERY SINGLE ONE would have been correct.  I hope that makes sense...

So I went up to my teacher and asked her about it.  She had absolutely no sympathy and wouldn't even consider partial credit for that section.  I tried to explain how easy of a mistake that was, and how I really did know what I was doing!

So, am I crazy for trying to argue about this?
<bot>: A simple mistake caused my test score to go from an A to a C, and my teacher wouldn't even consider partial credit.