In order to have children, parents must have a high score on a test so the government knows they’ll be financially and psychologically able to raise a child. Because you were adopted at a young age, you always assumed your parents were dead. You have just found out that one of them is in fact alive, but they are locked in an insane asylum.
Even with the changes I made to word choice and order, etc., this still isn’t quite right. I’d start it with In order to be allowed to have children, prospective parents must… Sometimes my preferred minimally invasive approach to editing has to be less minimally invasive.