Simplify the following text for a Grade 10 native English-speaking person.
Original: However , while working as a `` studio boy '' ( a general assistant ) in commercial design company Askew-Young in London 1932-36 , he took night classes in life drawing .
Simplified: However , while working as a `` studio boy '' in commercial design firm Askew-Young in London 1932-36 , he was attending night classes in life drawing .