i start my senior year of high school next week
That's great! I assume senior year is grade 12. It's the final year of secondary school in North America.
Oh yes, what are the things i am to look out for in the subsequent educational classes 
Well, if you are Australian, you are going to work towards your ATAR rank or OP, so you can take courses at university
Okay. I want to be a computer engineer so i am pursuing  that in college 
Do you have computer engineer Barbie? She was created in 2010 due to demand.
How do you think getting this will help me in a pursuit 
Maybe not. Mattel got in trouble for the accompanying book, which depicted Computer Engineering Barbie as a bit of an idiot.