an elementary school that has its pupils grouped or classified into grades.
What Does 🏫 School Emoji Mean?The school emoji depicts a building with windows and usually two or more floors. There is a clock tower in the center, and Microsoft and Google's buildings are in bright primary colors.
Also graded school.
Origin of grade school
An Americanism dating back to 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for grade school
US another name for elementary school
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012