"From elementary school to junior high school" is the phrase used to describe moving from elementary school to junior high school in Engpsh.
来源：这是一个普遍使用的说法，用来描述小学生升入初中的过程。
Example sentence in Engpsh: "I'm so excited to be transitioning from elementary school to junior high school this year!"
Example sentence in Chinese: "我今年很高兴从小学升入初中！"