Life / Thinking of a move to Wroclaw, Poland [13]

Hello,

We are looking into potentially moving to Wroclaw, Poland for business, and I am looking for some information: I have 3 children 9,6 and 5 who do not know Polish we would need to enroll them in a school that taught in english but would teach them Polish, 2. With a family of 5 we will need a house big enough for all of us probably 5 bedroom or larger house to rent for a few years, what are the going rental rates, I haven't found much online, 3. What are somethings we should know before we would move?

Any help would be great Thanks.