I have a very bad pre-university marks, in our time, it was not important, because its effect on university entrance was simply zero.
I was a student who was extraordinary in math and later became a software programmer. In math, I was an example among students and teachers, it was because in year before high school, in first year of high school, and in second year of high school, I was very best student in math in class.
I could be better in 3d year, but I didn’t study hardly. Anyways, in the pre-university, I developed my first serious DB application in C#.Net for state TV office of our province. I was one of first to learn C#.Net in Iran.
My Second software was a telco software AGAIN in C#, an NMS, a system which both controlled and monitored teleco sets like multiplexers and routers in 60 villages in the province. I know there was a bug in the set the Chinese supplier was unable to write software for, but I could pass it, additionally, it had a private protocol which I could write the software based on.
My language learning was so good, too. (I like cs and creative writing dual degree, but cs is more important)
Average of my 3 years of high school marks is above %90. My first year in high school passed with above 97% average. Second year more than 90%. Third year more than 85%, and the diploma country wide marks average is above %75.
I know C, PHP, Python, and experienced Java and .net.
Thanks!