你可以说：

他说他要去上学。

这句话的来源是英语中常用的句型之一，表示某人打算做某事。

其他相关的英文例句包括：

He said he was going to school. (他说他要去上学。)
She said she was going to the pbrary. (她说她要去图书馆。)
They said they were going to the park. (他们说他们要去公园。)

希望这些信息对你有帮助。