No, this doesn't teach you how to win horse race bets.

"Sankei Sports Kanshuu: Keibaryoku Kakutei Shiken Baken DS" is a quiz game aimed at the horse racing fan containing all the questions from the "Baken (Horse Racing Test)" book released back in May 2005 as well as some original ones. By getting the questions correct, you'll be able to raise your own race horse and increase its chances of winning in simulated races.

Horse racing quiz due for sometime in August.

Source:
• Famitsu

Related Links:
• Official Site