Nothing considered as sexual

The Lemonade Mouth team spits lemonade onto the bullies.

Wen gets a black eye from a falling picture frame.

Charlie slams his hand in a drawer breaking several fingers.

Lots of Bullying:

At one of the concerts one of the bullies interrupt and cause a fight. They throw stuff at each other cups, etc.

Lots of other bullying is shown.

The team fights guys trying to take away the lemonade machine.

Some mild name calling

None

There is thematic material involving dancing and defying.

There is some suggestive dancing but not sexually suggestive:

The Lemonade Mouth group does dances with swimming and pushing each other into the pool, although they are clothed it suggests skinny dipping.

Mo dances in one of the songs and lays on the table suggesting a making out song. This is not sexual.

Stella wears a shirt that says question authority. She stands up in an assembly and says defiant stuff.

The band performs the song Be heard, Be strong. It defies the school authorities. "Be heard, Be strong, I want to make some noise". "We're tired of this we want to stand up for what we believe in because we are the one". There are many other defiant lyrics in this song.

Get the name "Lemonade Mouth". It's the whole theme of the movie, standing up for what you believe in and going against other people.