God bless you. You have been insulted, and humiliated, hurt and cannot get past that, but God is asking you to forgive this teacher. Jesus says in Matt. 6:12 "forgive us our debts as we forgive our debtors". This seems to me conditional. Matt 6:14-15 For if you forgive men of their trespasses, your heavenly father will forgive you. verse 15 but if you do not forgive men their trespasses, neither will your heavenly father forgive you. In fact, one of Jesus' disciples asked Jesus how often should he forgive, Jesus says "seventy times seven. Matt 18:22
The fruits of forgiveness, healing, deliverance, peace, forgiveness from God, freedom from being bound from that stronghold, you will be blessed and more.
The fruits of unforgiveness, bitterness, resentment, anger, bondage, hate, torment, fear, unhappiness, unforgiven by God. I find it easy to forgive someone who offended me by first praying for them. Father I pray for the teacher who had offended this young man, that open his heart so he can see how much he has hurt this young man and others and ask for forgiveness. I pray for the salvation of this teacher in Jesus' name. I also pray that this young man will surrender himself to you and pray and forgive this teacher in Jesus' name. Father show him how you forgave him and died on the cross for his sins and you love him... God bless you.