Man, look at what determination brought you. You broke records, even in a school that you didn't even like.
For the mistake you made, I'd say it is very understandable. You didn't intend to, but then it happened. You have tried to make amends but to no avail. The person may have even forgotten about it.
I was very determined in that time and still now I have such kind of determination in any kind of task. It was a life changing experience for me..
I don't know that person forgave me or not but I was the one who made mistake and feeling guilty is natural.