这话语法上有错吗

来源：百度知道编辑：UC知道时间：2024/06/01 08:01:08

This is also certifying that the school have lesson during June to September.

想表达的是同时证明学校在6月9月之间均在上课
顺便指教下俺咋表达更好吧

This is also to certify that the school will be offering classes from June to September.

这样才符合英语习惯表达

去掉is，用回证明的动词形态。

it also proves that school ,we have classes/lessons at school from June to September.

certify is not the best word choice here, in my opinion...
i would use "prove"

This also proves that schools are in session from June to September.