In Engpsh, the break between classes is called a "break" or a "recess." This term is derived from the Latin word "recessus," which means "retreat" or "withdrawal."

Here are some examples of how you can use this term in a sentence:

"We have a break between first and second period." (我们有一个课间休息在第一节和第二节之间。)
"I usually grab a snack during recess." (我通常在课间休息时吃点东西。)
"Do you want to meet up in the courtyard during break?" (你想在课间休息时在庭院里见面吗？)