Hi Keza, I am a teacher, but sorry can't recommend any good schools in Doha - I'm in the research stage myself.. still living in Oz, but I've accepted a job at Al Jazeera Academy and am hoping it will be a good school to work at (if it's not I intend to work hard to make it better!!). My teaching background was horrified at the info they gave me about the SABIS system, but that's coz it all went totally against my personal educational philosophy, on my limited understandings it is not my place to say whether it is effective or not. I'll check out the website you found for more info so I can make more informed comments..
Where are you in Oz and when do you arrive in Doha? We are going in August and would be interested in catching up with other "newies"
Cheers R