I want to convert but my dad and whole family are all devoted Christians also they put me in a Christian school, I don’t know what to do it feels so wrong.
I've recently over the last year have been converting, my dad wasn't accepting. My mom and my brother have thankfully been defensive on my behalf about my beliefs. Do what makes you happy, if you want or need help anything I recommend emailing a synagogue nearby and asking a rabbi for help converting.
Honor your mother & father...for now. That is a commandment so, learn about Christianity as they wish but, learn about Judaism at the same time on your own. As an adult, if this is still something your heart wants to do, convert. Let them know this is where you belonged the whole time. Remind them that the Holy family was Jewish.