Yes there are several short term rentals in that zip code, most of them are listed as Vacation Home Rental Companies and if you Google you will find many, as I lived in one subdivision that was full of homes for rent by the day, week, month, year etc. You just have to be aware of the Tourist Tax of 12.5% I believe if it is anything under 90 days I believe, and yes the bus to Celebration High School and I believe the Elementary picks up at the front entrance. Celebration schools are top rated, certain exceptions outside that zip code they will wave under special circumstances, you would need to contact the Florida Public Schools for that, also I do believe Celebration is a Magnet school which offers specialized classes in certain subjects like Math and Science, but you would need to call the FL schools or Celebration to see what they have to offer. But you can also find short terms under Craigslist and a few other sites, If you need some more sites I will be happy to research them for you.
Hope that helps! G