Every thing that matters to us matters to God immensely, no matter how "small", be assured your peace is His great concern. Praying that Jesus will give you complete peace and bless your study, also give you clear concentration and powerful memory as you study and during the exam or however is this knowledge check called - that even you will be amazed how did you memorize all that.
Luke 12:6 Are not five sparrows sold for two farthings, and not one of them is forgotten before God? 7 But even the very hairs of your head are all numbered. Fear not therefore: ye are of more value than many sparrows.
Just to encourage you that your need is seen, and cared for by our God. amen