giffords. brown: margaret warner files the last of her reports from south korea. tonight a look at the country s pressure-packed education system. i have to go to school in the morning like 6:20 and school ended up around midnight. so it was stressed out. and mark sh lehrer: and mark shields and david brooks analyze the week s news. that s all ahead on tonight s newshour. major funding for the pbs newshour has been provided by: i mean, where would we be without small businesses? we need small businesses. they re the ones that help drive growth. like electricians, mechanics, carpenters. they strengthen our communities. every year, chevron spends billions with small businesses. that goes right to the heart of local communities, providing jobs, keeping people at work. they depend on us. the economy depends on them. and we depend on them. for three hours a week, i m a coach, but when i was diagnosed with prostate cancer, i needed a coach. our doctor was