Is AUTHOR wrong in the post ? POST : First serious post to this sub so be gentle please

I'm 15 years old and just moved back to my birth country with my parents. ( I was born here but lived in a different country since I was 6 )  
We've been here for a few months in a pretty nice house and with a puppy and my parents have gotten their new jobs. The only problem is that school-wise I havnt been doing much. 
I got into high schoolwhen I was 11 turning 12 (normal for the country since I was only like a year younger than everyone else in my class). That high school was terrible and is literally being shut down after the last two years graduate because of how bad it was. I left that school due to the bullying I got and the staff being the worst. I got into a small homeschool housed in the back of  kids cafe and was in it for maybe 2 years i think (enough time for it to get its own building and we went from 6 to 18 students). I was doing pretty well in that school until I had to move countries. Now here's where everything I just told you becomes important. When I want to that home school  I choose the subjects I'm supposed to study when I entered second year (I had to re do first year). In normal schools you're supposed to do this after your third year. So basically now I'm trying to get into this popular ""rich kids school"" (im not rich or even upper middle class by any means but my friends and i always called big schools with mostly white kids rich schools). I took the placement exam yesterday where the tests were math and English. I am absolutely without a doubt terrible at math and totally bombed the test and felt terrible but I'm praying that i did good enough in English (my best subject by far) for them to place me in a year with kids my age. The whole me already choosing my own subjects thing could also really hold me back.My parents and i want me to get into third year (I would b in fourth year I I never left my first high school) but there is a chance they could put me in SECOND YEAR. And my parents arnt even stressing about it at all ?????? Idk if it's my anxiety but the thought of being put in second year scares my SO MUCH. I just dont want to feel stupid by being in a class with people younger than me AND being so far behind in my schoolwork. Since my parents arnt stressing about it I feel like I might just be an asshole ??? Some opinions would be very appreciated.
