I'm sorry I don't know if I understood, pretty much I have to ask them how they can help me to fix mistakes of my essay.
Well, what I suggested you was to post the prompt (topic or the purpose of your essay) for us to give you a better feed back. That's fine : )
Sorry I'm new and I'm trying to learn from this first essay that I posted. I need to turn in this essay but I don't know if it's good and check my grammar.
Sure.... Let me help you;
My great effort in each year has given me the opportunity to get to one of my most important achievements throughout my school time.
I suggest a slight change in organization of this sentence to improve its clarity;
My great efforts made me successful in achieving my goals during my school days.The great accomplishment of been invited to the National Honor Society has been one of my greatest achievements in all of my school years.
As a result I have been invited to the National Honor Society, which I believe is the greatest achievement in my entire school career.. A grand prize to the work that I have performed and an example that everything that I have given so far has been worthwhile and that all my work is giving a good start to my goals I want to accomplish at college and my life.
This sentence is very confusing and I cannot comprehend what you try to mean... If you explain it further, I can help you with this idea.... Also don't write too lengthy sentences because they tend to confuse the reader : )Hope my comments are helpful! : )