Perhaps, everyone can achieve a great intellect?

There is something that has perplexed me for some time, when I was in fifth grade, my intelligence and interest in school exponentially increased. Before, I was an ''F'' and ''D'' student, I was unforchunetly a part of a remedial english program (spanish was my first language), and I was horrible at just about everyother subject, besides in the weekly spanish course, that is. But why is it that everything changed when I entered the fifth grade? Within the first month, I graduated from the remedial english program, I began to excell in mathematics, and my love of literature and poetry became apparent. I worked with dilligence from the 1st to the 4th grade but to no avail, I have never understood what happened in the fifth grade, and I believe I never will. Since then, I've atteneded a private middle school, and I'm currently enrolled in a private catholic school -- I've maintained a 4.0 since then and my love of English, science, and mathematics has increased with each ping day. I just want an explanation to what scintillated the trans-mutation within me?