Need help on cheating ?

Hi well im in 8th grade and this isnt bragging i just ened to tell u guys all of the information so you can help me. Im in Sas which is after honors at my school i get straight As and im the smartest in my cl beating the asians 2 :). They would of let me skip 8th grade math which is algebra 1 but on the tests i dont do so good cuz i always get nervous and blank out. But on hm cw and complicated questions i always get 100% or an A+. I already know everything but i need to cheat on the tests so i can get a scholarship cuz thats my only hope to get into a good college/univiersity. So i want to impress them in 8th grade. Can anyone help me? Ive never cheated before. Can it be something that i dont need anything to buy. I dont think its wrong becuz i know everything i just get nervous and trust me i did everything to try to stop my nervousness(not a word xD) but nothing helped. Help plz. Here are the 2 techniques im thinking of writing formulas on my ankles which are covered by socks. Then lifting my socks to see them. And the other one is putting a rubberband over a book. Writing the formulas then putting it on my wrist as a bracelet. When u strech it u see the formulas but in a unstreched state it looks like getting a pen and just drawing badly on it. Im very scared if a teacher gets me? Help plz