hey i had an obsession with learning with french at one stage...and because at school i could only do one language (am doing latin) i went to alliance franciase
Its really good (i stopped going, became too time consuming, and didnt want to do it for HSC) basically they have two programmes one for adults and one for school-kids.
School kids (yr 10, 11, 12) they divide into levels (1, 2, 3) depedending on how good you are in the language, and its really good in the respect that when i went there all the teachers are french (native fluent french speakers) and when they speak to you, they speak to you in french not in english so you pick up the language better.
And the location is really good, its adjacent to George street like 1 minute walk from QVB building, I used to go after school and get off at town hall.
I also have friends who go, they're doing french for SC and doing level 1 french and they said it is helping them out a lot.
Here's the website, check it out:
http://www.afsydney.com.au
When i went there, they use a different text book, in my opinion its worth going.
Hope that helps, any more questions just ask.