Parents petitioned the school to review its admission policy.是什么意思？

Parents petitioned the school to review its admission policy.

家长请愿恳求学校修订招生政策。

parents

n. 双亲（ parent的名词复数 ）；

例句
Some parents believe a boy must learn to stand up and fight like a man.
有些父母认为男孩子必须学会像男子汉一样顶天立地，勇于抗争。

petitioned

v. 祈求，请求，请愿( petition的过去式和过去分词 )，（向法庭）请求，申请；

例句
Twenty-five of his supporters petitioned him to restore the monarchy.
他的拥护者中有25个人请求他复辟。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

school

n. 学校，上学，学院，群；vt. 训练，锻炼，教育，教导，约束，给…上学；

例句
I was terrible at school and left with few academic qualifications...
我的学习成绩一塌糊涂，离校时几乎没有学历。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

review

n. 复习，回顾，（报刊的）评论，[法]复审；vt. 检验，复查，复习，评论；vi. 复习功课，写评论；

例句
The bulk of the text is essentially a review of these original documents...
文章的主要部分基本是对这些原始文件的回顾。

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

admission

n. 准许进入，承认，坦白，入场费；

例句
Students apply for admission to a particular college...
学生们申请上某所大学。

policy

n. 政策，策略，保险单，策略性；

例句
We have seen this as an attempt to place the blame for a policy that has gone adrift.
我们已经认识到，这是把责任归咎于一项已偏离方向的政策的一种企图。