Excitement and apprehension will be whirling around in their heads, hearts and tummies. For parents as well, many things are whirling around in their heads, hearts, tummies, and wallets as well. It is communication.
Good communication is critical to building any relationship for the benefits of all, for all.
An important factor to realize is that 'Lack of communication causes most clashes and grief in all areas of life' and this can begin as early as the beginning of one's school years. Parents need to talk to teachers. Teachers need to talk to other teachers. Without communication there's a void. Good communication can head off a potential problem.