A dance class in your dream implies the imminent release from a discouraging emotional situation. It suggests rapid growth based on prior personal development and inner fortitude, in other words, you may be about to reap the harvest of seeds sown in the past.
To dream that you are watching a dance class in progress can indicate movement into a pleasurable period of creativity. Dreaming that you are late for a dance class belies an unconscious fear that life may be passing you by.
[1]You may want more passion and creative expression in your life and are willing to learn what you need to know more about in order to create some.
[2]