The school decided to consolidate three small classes into one large integrated class.

consolidate 由前缀 con-（表示"共同、一起"）和 solid（"坚固的、结实的"）加上动词后缀 -ate 组成，字面意思是"使共同变得坚固"。引申为"合并、整合"，指将多个部分结合成一个更强大或更有效的整体。