My school �s anniversary is also in October and I have to present some projects as well. There are a lot of things you can prepare. For example, you can organize "the english week" with different activities, such as:
1. For elementary students, I will propose a spelling bee contest while the advanced students can organize a debate. You can present both projects.
2. Also, it is a good idea to organize a play in which everybody can participate with different roles.
3. Radio programmes, etc.
4. You can decorate the school with english birthday cards made by your students addressed to the school, etc.
Regards,
Marina.