Valentines Day Dance at Another School HELPPPPPP!!!!?

ok so my best friend (we're both girls and we're straight not lesbo!) invited me to come to her schools dance with her. we go to different schools, and i want to go 2 her schools dance. would it be ok? can i go to another schools dance evenn if i dont go there?? she is going to buy me tix at her lunchtime btw. HELPPPP pllz and thanx ya