A strong thesis statement contains two parts: and assertion of about your topic and supporting subpoints. You could take your topic in two different directions. One is write in favor of anti-bullying strategies and create corresponding subpoints for your body paragraphs that support your opinion.
For example: Anti-bullying strategies positively impact student behavior on school campuses by creating student awareness of the causes and effects of bullying as well as providing interventions for at-risk students.
Or you could write against anti-bullying strategies and their ineffectiveness. Your subpoints could address why the anti-bullying strategies do not work.