Where in the country are you? You might get an invited to see how we do things here. How big is your school? Without a dedicated librarian, you are fighting an uphill battle (not least as it is clear SMT do not value reading fiction as a way of supporting literacy.) Accelerated Reader is very useful, but you can't reply upon teachers monitoring reports. I think the most effective thing you can do now is perhaps colour coding the difficulty of your books, and having low reading age, but older interest level, books. Again, PM me if you want.