If you would rather not tell teachers about anything,then don't.
I found out about a disease I have(It won't kill me but I have to live with it)a few months back and once I thought about it so much I just had a panic attack.Because of that I didn't get any of my school work done,which reallly stressed me out the next day because I ended up having to tell me teacher why it wasn't done.
I didn't plan on telling anyone about the disease, especially teachers because you don't know what they could tell your parents.(My parents don't even know I have a disease)
Sooo you see if you are going to tell someone then do it,if not then just let it go.Avoid situations where you might have to tell them.
T_T That teacher that I had to tell about my disease wouldn't let me go until I told her "what was going on" so I basically had no way out of it.

Anyways not sure if that was very relevant,>__< I hope I helped somehow.
And also have a great year! ^V^ Would love to get to know you one day too!