my school blocked me from downloading on my laptop?

from monday to thursday i don't have access to a desktop. and i dont have my own laptop. i use my school laptop. i downloaded 1 or 2 movies at home and then they blocked me from downloading the next cpl of days. how do i find a way around this that doesn't cost me? i am trying to download youtube downloader at the moment, but i cant. is there a way that i can download it?