Given the fact that you have a teacher's credential hanging in the balance of a misdemeanor charge of having an open container in public, it is best that you retain a criminal defense lawyer to represent you in an attempt to possibly have the charge reduced and the matter resolved so as to not have a negative impact upon your teaching career.Most likely if you plead out to the crime you will receive no jail time, but will receive a fine of roughly $700.00 to $950.00. The desire from your part is to have the misdemeanor charge reduced to an infraction so as to have no negative impact upon your teaching career.Good luck.