An important person in my life

An important person-my math teacher
He must be the most important teacher in my whole life ,not only just the life of my high school .Some teachers are worth remembering forever ,and he is also the one I am deeply thankful for every time I recalled my high school life .If it hadn't been for him ,I might not have been able to get admitted to my current university.
Still remembering ,on the night of the first day of the college entrance examination ,I suffered a huge blow after my mathematics exam .I thought that I wouldn’t entrance my ideal school .I might not only fail to get into my dream university, but also have to repeat the senior year of high school .I was so scared that I cried out of control ,and my math teacher came into the classroom and asked what’s wrong with me .I told him that I would fail in this exam because I didn’t complete my math paper .I felt very negative about the following exams ,I refused to review the knowledge points of other subjects .
Then he called me out of the classroom ,told me the real story of his two students ,one like me thought her math text failed ,then she response passively to the upcoming exams .When the grades came out ,she found that her math grade was not so bad as she had expected .The other knew that her math not good in the first place ,so she decided to take rest subjects seriously .At last ,she got a pretty good grade .
I knew his sincere and painstaking intention ,so I chose to become the second student ,and the last grades were not very bad .
I really thanked him .He is an invaluable person in my life and also an unforgettable presence in my high school life.