Well that is what swim teachers say.
My daughter went to swim classes too.
Until she wanted to try something else.
Dance classes.
Its really up to you... you make her go, or not.
She is so young, and either way... you make her plug through it... and maybe she will calm down... or not.
All kids being different.
You can always re-visit her swim classes later.
Or make her still go.
Kids go through that. Each parent dealing with it differently.
But keep expectations, age-appropriate.
When I was a child, I had to, go to piano lessons. I HATED it. I would run away, when it was time for my lessons. I ran away outside and would hide. I got nothing out of it. My parents made me go... to build character and learning not to give up etc. But that is something that older kids comprehend more. Me, I learned to just hate it more. It was not my thing. Still isn't, as an adult.
maybe it is something about the lessons that she does not like. Because if it is just casual playing in a pool.. you said she likes it and has fun and is not scared. So talk with her.... see 'why'... she does not like the lessons. Per say.
Or, maybe find another swim school. Or a one-on-one type lesson.
Or, teach her yourself, at the pool.
My sister taught me how to swim.
No formal classes needed.
Ditto SA Mamma H.
all the best,
Susan