I love a girl how can know she loves me and how can say I love u

i don't know who's she I know only name and she is very good and sweet and I love so much but she study in 12class I am in 11 what can I do

Hello that's not bad well we all knows love is blind so are you really in love with her? heartily then firstly ..Is she elder than you ? if she is and age difference can
get you in problem ..but if its normal than age difference so you don't need to

think about your study gap ..You should first try to know her and make friendship if she would like you ,will try come near you ....so with out knowing her you won't get your love .....