I dont know what to do now?

Hey everyone, my name is Ryan Kissinger and I just finished highschool. I am going to tell you a little story first so try to stay in with it , i really need help.. their are a few different scenarios leading up to one big ordeal...Last year in my 11 grade I took biology with one of the teachers at my school, it was the first year she had taught at the highschool(being promoted from the jr.high)starting off the year all she seemed to talk about was church and how she wanted all of us to go to her church , where she is a youth administator.i thought that it was fine the first few months but after a while i started to catch on, she didnt care if you went to church she wanted you to go to the church that she attended. she would always ask me to attend but i never went. I failed biology that year.CONT..>>12 grade>> I was taking an Earthscience cl in my 12 year, and the teacher was the same as the year before.. I never attended the church she went to, but my sister goes regularly to the same one she does.. shes also in the earthscience cl with me. She is two years younger than me so shes just getting into the whole highschool drama. She is a very good girl except when she wanted to skip school with me in the mornings.You see..in my school if you are tardy over three times you get In school suspention, so if me and my sister even thought we were going to be late we wouldnt show up to her cl just because we didnt want to get iss..And knowing us we were late a lot.. One day in earthscience cl, the teacher calls my sisters name out and asks why she hasnt been coming to cl in the mornings. (We both had her first period so we both thought that we would go eat first period and just show up second period.along with the fact that we would get ISS if we were tardy.. no big deal).My sister replied, ' I dont know I just havent been waking up on time".. the teacher says in front of the whole cl"I think that your brother is causing you to miss this class and you shouldnt spend so much time with him'(reffering to me)....Shocked,! me and my sister just looked at eachother in amazement that she just said that.and me and my sis were very close..Often when my sister would miss a day of church, the teacher would call her back into the science lab alone and ask her why she missed church...this is a public school where religion is not supposed to be pressured by teachers.AT ALL..but this teacher seems to do it a lot..At the end of first semester( with a lot of absences in her class) I felt confident that I was going to pass her class. Come the end of second semester and I started to worry about just her class because i needed all my classes to graduate. But she didnt seem to want to help me at all with giving me any of my makeup work. She had been helping all of the other seniors in that class make up all of their work. But not me.After asking repeatedly. still no make up work, but all the other seniors(who have missed the same if not more days than i had)Got to make up all their work. The day comes to when we have our second semester exam which counts huge on your over all average....Four days prior to when the exam was.. we were given the huge study guide for the exam which had about 150 questions on it.. ..me and my mom stayed up every night working on the sheats which were very difficult and even google didnt know half of them.. and this is suppose to be a 10th grade class...After studying and studying i was probobly the most confident i had ever been on a test.. I went in the class. took the test and came out very confident about it..their were 100 questions on it..each question counts off 1 point.. i thought that i had missed a TOTAL of 5 questions..I WAS THAT CONFIDENT.. and it takes a lot to make me confident about something.. walking out of the class room i left knowing that i aced the test and was going to pass the class and graduate with my class the following week.....A few days later I show up to school to finish my last exam , when i get finished with it I go to the earth science teacher and ask her how i did on my exam.. She tells me that i failed, in the rudest voice..Im standing at the door looking at her sitting at her desk and i tell her that I know I didnt do bad on it..I said I want a copy of my Test and my study guide.. she refuses...I go home enraged..telling my parents they were very upset thinking that this is the only teacher that is going to stand in the way of me graduating... My mom says"im going to call the school and talk to her tommorrow.."... the next day Mom calls and calls asking to talk to the teacher...she doesnt call back..I had to go to the school that day and give some work to another teacher..while i was their I decided to go to the earth science teacher and tell her that my mom has been trying to contact her.. I stand in the doorway and tell her politely that "my mom has been trying to call you , and you need to call her soon" The teacher replies very very angri