Keeping her students from going down the wrong path, safe from field trips and now, alive in another world...

The powers that she has gained helps greatly with that although without an offensive ability would have to let her students fight. Although more than likely she will instead just try and find a way for her students to keep on living in this world and NOT go to war. Leave that the other summoned people that are not her responsibility (they don't have parents to answer too if she does get home)