Back in the day, when we were still school kids, our Islamic Studies teacher used to begin her lectures with a prayer and sometimes, asked us to join in too. It is the prayer we say before starting to study and the translation goes like this:
"(Moses said): 'O my Lord! Open for me my chest (grant me self-confidence, contentment, and boldness). And ease my task for me; And make loose the knot from my tongue, (i.e. remove the incorrectness from my speech). That they understand my speech." ~ Surah Taha, verses 25:28
This prayer proved to be quite beneficial for me -- someone who was unaware that such a thing even existed. Somehow, I got into the habit of saying it throughout the years after school ended, to the extent that when I started taking my freshman International Relations course, the professor used to recite this prayer for us before starting his lecture. He was the only person I knew, after my schoolteacher, who recited that prayer and that made me respect him even more.
Point is, little prayers can do wonders and it is good if these prayers are taught and explained to children at a tender age so that they remember them well. This prayer in particular helps remembering lessons and makes academic tasks so much easier.
P.S.: Refer to the Arabic translation for the actual wordings.