Complex sentence: Childish studied foundation at Medway College of Design in 1977-78, and was then accepted onto the painting department of St Martins School of Art in 1978, before quitting a month later.
Split into simpler sentences: Childish studied foundation at Medway College Design in 1977-78. And was then accepted onto the painting department of St Martins School of Art in 1978, before quitting a month later.