I put depends on how bad it is but really it depends on the time of the year - we pay in advance for my sons swimming lessons so unless he is really bad or unless the weather is really cold and/damp then i take him.
It would depend on how happy they were - ill and grisly then no its not fair on them or the group / teacher.
But if they are happy then why not - a cold is viral so despite popular belief wont be made worse by getting hair wet etc etc
I probably would tbh as long as it was not too bad. Abigail went through a stage last year when she just had one cold after another and I didn't want to keep her off swimming week after week- one because we pay by direct debit so I pay whether she goes or not, and two because I didn't want her to lose the progress she had made. If she was lethargic, had a temperature or didn't seem right in herself I kept her home, but just a sniffy cold she will still go.
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