How can I be the Alpha of My School?

Ok so its the summer and I am starting my 8th grade year and I want to be the alpha of my clique. go to a private school so we have dress downs every so often and I made a plan what were wearing. I also picked were we are sitting next year I already have a great beta who would never make a good alpha and is happy where she is. Are group dosnt have a real alpha we are all kind of level but I need help becoming the total dominent alpha please help!