Academy Schools

I would like some feedback on schools that have a 9th Grade Academy. My school is in the discussion stage of making some changes to our school. We are in search of ways to foster academic success. There are many topics on the table and we will have more in depth conversations as spring semester begins and we prepare for the next school year. Will someone, who has a 9th grade academy or has experienced this, give me more information about it? How does it work? What are the differences? Have you experienced positive outcomes? What are teachers remarks/concerns? Do you see less discipline issues? Have you been pleased with the academy process? Any information you share will be greatly appreciated.