Find out a bit more about the school - what their philosophies are, what their strengths are etc and use that as a guide. Like some schools will advertise the fact that they have smaller class sizes, so if thats the case then you could comment on that (something like how she always does better in a smaller group) and write about how you feel that this new school will fulfil your expectation of an excellent education for her. I guess you could write about how important it is that she is in an engaging learning environment with a strong focus on academic excelence.

I dont know.. sounds like they want you to write a resume type thing.