First, I want to reiterate as many have done over the years, you will not see a physical manifestation of a spiritual being like an angel. That being said, you can spiritually commune with your Guardian angel. Like many things, in quiet and stillness is where you can find the spiritual. Learn to quiet your mind and focus on the energies around you. Learn what the world around you feels like. In time, you will recognize the differences in energy between home and school. You will find certain people have certain energies. And you will recognize a presence always near you. That would be your guardian angel or whatever your faith calls it. Connect with that and you will find the name for it. And always remember, Life isn't about magick. Magick is about life.
There's a meditation that might work out for you here. Imagine yourself visiting a tree. Go to the upper branches - here is where spirit guardians and teachers reside. You can also find a spirit animal/totem in the roots of this tree. Always be polite and leave a mental gift for your spirit guardian(s). If you're not allowed to go somewhere, it's possible it's not time for you to enter that part of the tree system.
It takes a lot of practice to hear your guardian spirit's name. At least in my case it did. Make sure to record your experiences in a notebook :) ! You'd be surprised at how useful it is having past lessons written down for information's sake !