Junior Alvarado was worried when he began his first year at a public charter high school in Washington, DC. He often struggled in his math classes and earned poor grades in middle school.

阿拉瓦多在华盛顿特区一所特许公立高中刚上高一时很担心。他数学学得不好，在中学时成绩不佳。

But the teachers at the Washington Leadership Academy used computer programs to identify the areas he was weak in and design a learning plan just for him.

但是华盛顿领导学院的老师们利用电脑程序来确定他的薄弱环节，并为他量身定做了一个学习计划。

As Alvarado started geometry in his second year of high school last week, he says he felt much better about his math skills.

阿尔瓦多上周进入高中第二学年开始学习几何时，他说他感觉自己的数学技能有所进步。

" For me personalized learning is having classes set at your level," the 15 - year-old said, in between lessons. " They explain the problem step by step, it wouldn't be as fast. It will be at your[ speed]."

这位 15岁的学生在课间表示：“对我来说，人性化学习就是按自己的水平上课。他们一步步解释问题，不会那么快。就是按照你自己的速度。”

Many schools in the United States struggle to raise the high school graduation rate. They also have difficulty helping many minority and low-income students perform at the same level as others. So many educators see digital technology as a way of solving these problems.