Here's an easy way to beat those Points Battles. After you get the Undead Summoner at your school (in Nordagh), take him into every Points Battles match. While in the match, use his Death for Life ability and summon a skeleton. Once the skeleton is out, use the Undead Summoner's Life Steal ability on the skeleton that he has just summoned. Repeat this as much as possible and use the rest of your party for normal attacking. This not only keeps one person out of harm's way, but it also lets you build a good amount of points for your school without having to travel too far.