I'm a TA and i'm 21, sometimes I have to cover lessons and a lot of the time I'm not taken seriously.. it starts off by them genuinally thinking I'm a 6th former i explain im not then its goes into you look young bla, bla, how old are you? And the lessons just gets off on a bad note. I am starting my training this year and when I'm an nqt i will be 22 and still look young! its just really denting my confidence even some of the staff think I'm a 6th former how can I be taken seriously when students don't even realise I'm a member of staff?!