在光明小学上学用英语可以说“I go to school at Bright Primary School.”
"I go to school" 是一个常用的表达方式，用来表示上学。"at" 是一个介词，用来表示在某个地点上。"Bright Primary School" 是学校的名字。
其中文翻译为："我去光明小学上学"
其他例句：
"I study Engpsh at Bright Primary School." (我在光明小学学习英语)
"Bright Primary School is my school." (光明小学是我的学校)
"I have classes at Bright Primary School every weekday." (我每个工作日都在光明小学上课)