If you really want to go to a sleep school I would recommend either O'Connell House in Camberwell or the Queen Elizabeth Centre in Noble Park. I went to QEC (google it - they have lots of info about what they do on their site). They do NOT do CC but they teach comforting strategies that we found worked in our house. I've heard that Tweddle call it "Comforted crying" that other sleep schools do as well but they don't and it is actually timed crying
If you want any other info let me know.