why this happens

"I am from Kanpur and I took admission in a school called Radhakrishna. Later, I found out that this school tried to convert students to Christianity. The school principal forced us to read the Bible every week and offered fee waivers if we converted to Christianity. When I told my father about this, he said that it was okay to convert if our fees were waived. He said, 'We are not so rich. We earn only 15 thousand rupees a month. What does religion matter? If the fee of 1 lakh rupees is waived, then it's like getting a scholarship.' The entire family converted to Christianity, but now that I am doing engineering, I don't like going to church every week. My faith is still in Hinduism. My main question is why such Christian missionary schools are opened and how poor people get trapped in this. I want organizations like ISKCON to also open schools for poor children so that they can avoid such problems."