讀書會|英文讀書會|快樂英語讀書會|中華民國快樂英語協會

Nice try!
But, they all sound like cheesy advertisement slogan.
Is that what we all want to go for?

Allow me to suggest a tagline, which can be more descriptive than a slogan.

A tagline is a variant of a branding slogan typically used in marketing materials and advertising.

When people first see the name of this English club,
the first thing they ask is what makes this English club happy.
As far as I know, it is no longer easy to be happy just by being told to be happy.
So, why be happy? The following statement or tagline says it all.

"There is a chance that your grammar could be correct!"