I appreciate all the personal experiences,.. this has helped me. I'm 50 and remember having to take a note home from my first grade teacher to my mother that said I was not allowed to bring any more books (Truth Books, etc) to other students or use the class to as an audience to "preach to . It was totally embarrassing. I wish I had a copy of the letter, my mom probably used it for an experience of how the world was persecuting her children.
The issue didn't go away when I went to music class because during times of the year the class would sing "seasonal" songs, but I had to personally explain to the teachers that I couldn't sing certain songs, all of this is in front of the class or at least where they could hear. We were instructed at the KH and by parents to not just sing but to give an explanation of why. This was all before any JW Education brochures.
I also had to personally explain to the teachers why I wouldn't salute the flag, or say the pledge and just stand, the National Anthem you remain seated. Here again, we just couldn't not say the pledge, we had to give an explanation as to why.
Some might incorrectly argue that this made me strong; but it just made me feel like I did not belong in society and like an ass. When I was in fourth grade I remember being asked by a student that lived in the neighborhood if I wanted to play catch. Just throwing the ball back and forth. My brother turned me into my parents for "associating with worldly people". My mom bought me a net that would bounce the ball back to me, therefore, I would not have to associate with worldly people again.
When I was in high school I had a friend that asked me over to his house so we could ride horses, as his family had several. (We both lived in the country) My dad protested and forbid me going because it was with a worldly person. I asked him outright, "Dad, do you go to lunch with some of the contractors that you work with"? and I named specific names. He eventually let me go ride horses. Unfortuneatly, even if you were "permitted" to go, you had a guilty conscience and couldn't just enjoy the situation, as you were in the midst of horible "worldly people". The Witness attitude affected everything.