Nope..............
School massacres started in the USA around 1700.
First it was American Indians with knives, spears, and axes.
As weapons were progressed and the white man expanded into the rest of the USA, school attacks became more available to modern weaponry........guns of all kinds.
There have been school attacks almost every year in this country since the 1700's. One's that have been recorded anyway......I'm sure there are plenty that nobody lived through TO record for history.
Modern society hasn't heard about them, because we have been recently graduated to instantaneous news.......usually as it's happening.
This is an early list of school SHOOTINGS, not the start of school massacres.
Not ALL shootings were intended criminal acts though.
en.wikipedia.org
There are many such lists online, all with slight variations in their lists, but all pretty much the same.
1700s The earliest known United States shooting to happen on school property was the Pontiac's Rebellion school massacre on July 26, 1764, where four Lenape American Indian entered the schoolhouse near present-day Greencastle, Pennsylvania, shot and killed schoolmaster Enoch Brown, and killed...
www.k12academics.com