Got arrested for a A misdemeanor contributing to a delinquency of a minor?

A week ago me and 2 of my friends were just driving around i was in the panger seat and we has picked up this girl we knew she was 16 and everyone else was 18 including one other girl she was 18 to we ended up getting pulled over for a head light the cop asked for ids and all that and the 16 yr old curfew by law is 11 and it was 1:30 when we got pulled over so they took us 18 yr olds to jail for her being with us out past her curfew and gave us a A misdemeanor contributing to a delinquency of a minor no alcohal involed searched the car found nothing sent us to jail for 4 days and my parents boded me out bond was 500$ i have court march 2 for this anyone know what there going to do and whats ur thoughts on going to jail for that to me i think thats complete bullshit but please let me know