credentials means more opportunities for better jobs and quicker promotion.
other people，especially those who are laid off or out of employment go to vocational school to prepare to return to the job market. they are eager for new skills so that they can be qualified for the jobs in retail trade，administration，education and other service categories to which they are strange because most of them were blue-collar workers in the factory.
there are also people who come to take such courses as chinese traditional medicine，painting，calligraphy and photography. as their working weeks decline people begin to have time to fulfill their old dream of their heart’s desire.
out of necessity or out of interest，people go back to school for the common goal——to improve themselves，and this boom in adult education，in turn，helps to raise the intellectual standard of the whole country.