There is a cockapoo standard I will try to find for you. Basically they are like any other mix, it depends on the dog and its individual situation as to what it will be like.
edit: http://www.cockapooclub.com/ccapages...edstandard.htm
http://www.suite101.com/article.cfm/11111/80844
http://www.cockapoos.com/generalcont...ckapooinfo.htm

There are many sites as the cockapoo is a ckc recognized mix which means they set forth a standard and they keep track of registered dogs' pedigrees. I recommend looking into a rescue group as there are so many homeless cockapoo puppies and adults already.