No, it's a good idea really, if you don't mind carrying it with you. I use a mini laptop because I have dyslexia, and I know quite a few people who bring them in.
Yeah OP I take mine, and I know loads of people at my college (well ... 6th form) bring theirs too bc school computers are so **** ¬_¬ and it's just easier to work with everything in one place particularly on big projects :3
Or even just to make notes buy yourself, easier to do on a laptop in your own space than on a big computer all cramped up with everyone
In my sixth form its pretty pointless to have one becaude you dont have or need it at all. One friend bought a laptop just for practical science writeups and solutionbanks. I use use my phone. I also think it makes him look like a spaz haha. I don't have much non lesson time so yeah not useful for me. No one really cares if you do or dont except your friends who might take the mick out of ya