I understand your pain, for I experienced something similar as a teenager. Now I am the mother of a teenager (boy) and I too want him to make school his priority. If your love for each other is real, it will last. Ask the Lord for patience. Believe me, you won't regret it.
Please continue to trust in the Lord, He will make a way. I know that it seems easier said than done, it will work out, but only through sincere trust in the Lord. Stay in prayer, and let God guide you. May He send a special blessing to you!