Civil does not allow me enough space to educate you on transgenderism and  sexual reassignment surgery, but I can assure you that the AMA, and the APA, are clear that these are not "lifestyle choices." 

You are correct that education is not a lifestyle choice, which is why we citizens fund public education whether we have school age children, or any children for that matter, or not. 

The parents who want to send their children to private, often religious, schools, are the ones making the "lifestyle choice." It is unethical to siphon funds from the public pool through vouchers.