Wondering if the form and grammar were correct

I’m an economics and management student at “università degli studi di milano”, I’m attending the last year of my three years degree course witch I will end in July; previously, during my course of studying, i attended classical high school, where i graduated with the highest final grade.

Although classical high school is not focused on the development of economic and managerial knowledge, it offered me the chance to understand human and social aspects of the context we live in, opportunities and threads that constitute it, and the importance of a logical but also dynamic mindset. After high school, at the university i had increased and broaden economics theoretical concepts, which had engaged me well enough to build in me the will and the consequent ambition to submit the application to your university.