<prompt> Human: Hi rpersonalfinance,Im a high school economics teacher and I want my last lesson to be on money management and was wondering what advice you guys would have wish you knew leaving high school. Things like the 30 rule for rent and such. Any advice is welcomed.Thanks!  <response>: Honestly, just teach them about compound interest. Literally one graph of a 5000 contribution over 20 years at a modest 6-837; return rate will probably explain the importance of finance and power of investing. 