If you had a report card that said you passed English, and then later you were told that you had not, then your mother - NOT YOU - would at least have reason to address it with the school system.
Since you do not, and since it is both your and her responsibility to know what your status is, you have no legal case and neither does she. If neither of you cared enough to keep track of whether you were passing or not, the fact that she put out money she may not have needed to is on you (meaning both of you), not on the school.