Do you know any spells to improve intelligence and acing a test?

I have a few focus spells on my blog to help with focus and concentration though there are tons of postings all over tumblr for improving studying, schoolwork and grades on here. I am unfortunately at work and can’t go outside of the ‘main tumblr’ dashboard. if I try to go to my blog or others blogs it just blocks me due to our weird security here that blocks ‘personal websites’