My 9 year old daughter is very careless about her school work. Play and T.V. and not studies are her priority. Do you think it would be a good idea to put her in a hostel?
Why do you have to rely on a hostel to discipline your child? Not that sending a child to a hostel is unhealthy but you can do that later when she has to go for higher studies. Right now you should follow the policy of being firm but polite. Never use harsh words or punishment to make your child follow the right conduct. Give logical reasoning to your daughter, this will bring self discipline. Also look into her routine and how you can bring a balance between play and studies.
Try to make studying interesting by getting encyclopedias, watching channels like Discovery, surf the net with her. Praise her whenever she makes an effort to study. Appreciation will motivate her to take her studies seriously. And remember that although it is good to put your heart into studies but education is not restricted to only books.