the tipsters have become known as the hag parazzi.e see that there is a school here in the neighborhood on the corner, and the team looked for any suspiciously lit schools where the students might be looking for illicit algebra lesson. one school was open. and the inspectors issued a penalty. they have exposed 75 schools this year alone. he hopes that south korea can eventually reach a happy medium between the infectious enthusiasm for education and the students' well-being. >> we should try to make students be happy to learn. that's very important to me. so that's what i hope for the future of korea. >> coming up, is there a kinder, gentler way for the students to make the grade? we will visit a country where students spend far less time in classroom in south korea, and yet they enjoy remarkable results. [ artis brown ] america is facing some tough challenges right now. two of the most important are energy security and economic growth. north america actually has one of the largest oil reserves in the world. a large part of that is oi