你可以使用以下几种方式翻译“我毕业于什么学校”的英文：

1. I graduated from XX University.

2. Which university did I graduate from？

3. Where did I graduate from？

4. Can you tell me which school you graduated from？

5. I am a graduate of xxx University.

6. I graduated from xxx University.

例如，如果你毕业于北京大学，你可以说：

1. I graduated from Peking University.

2. I am a graduate of Peking University.

3. I graduated from Peking University.