The phrase "painting class" is correct and can be used in written English.
For example: Jane signed up for a painting class to learn how to paint better and express herself creatively.
Watching Errol in his painting class, George wants Errol to like him.
She had us all go to painting class on Sunday night.
Terry Elkins, a local painter, will have a painting class there.
The painting class — of course it was harmless, and no doubt interesting, but did he imagine that solitary painting was a way of rejoining the world?
I visited a plein air painting class Mr. DuToit was teaching as part of the summer program at Truro's Center for the Arts at Castle Hill.
She chose a Saturday morning painting class over riding lessons and was taught by a local artist who had exhibited at the Royal Academy.
She responded with mock-outrage: "No!" She recalled later posing for Hawthorne's painting class as a young schoolgirl, and being paid 75 cents to sit on a nail keg on a beach.
He taught the landscape painting class at the Moscow School of Painting, Sculpture, and Architecture for many years (1857 82) and counted among his students a great many superb artists, among them Isaak Levitan and Konstantin Korovin.
She took the painting class she'd always dreamed of and worked on her Spanish.
Try taking a pottery class or a group painting class.
