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https://en.wikipedia.org/wiki/School_shootings_in_the_United_States#19th_century
Nothing compared to drug related deaths in teenagers to include drugged Teen Drivers. Motor vehicle crashes are the leading cause of death for U.S. teens. Six teens ages 16 to 19 die every day from motor vehicle injuries.
Almost all violet teen deaths can be attributed to the break down of nuclear families
19th century
totals killed: 24, injured: 30 +
School-children killed: 14 (2 unintentionally)
break-down
In the decades 1840s and 1850s 1 Professor, 2 schoolmasters, and 1 schoolchild were (4) killed.
During the 1860s, 2 students, 2 teachers were (4) killed, 1 student was (1) injured.
During the 1870s, 1 schoolchild (unintentionally), 1 university student, 1 Professor, (3) killed. During the same decade 2 schoolteachers, 1 schoolchild (unintentionally), and 1 superintendent of the stables were (4) injured.
During the 1880s, 1 schoolmaster and 1 schoolteacher (female) were (2) killed, 6 schoolchildren (3 unintentionally), (6) injured.
During the 1890s, 10 schoolchildren (1 unintentionally) and 1 schoolteacher were (11) killed, 4 schoolchildren (plus 14 where the victims descriptions weren't given, and another, where the indicated number was reported as "several") and 1 high school Professor, (19 +) injured.
20th century
totals
killed by gun-shot, or as a result of gun-shot: 13, 10, 5, 9, 11, 14, 28, 34, 46, 84 (254) injured: 5, 14 +, 5, 4, 4, 8, 65, 73, 87, 131 (406)
Of the 254 total, there were 114 school-children killed, (of these, 14 were killed unintentionally, 11 died by suicide plus 1 by the execution of a suicide pact, and 1 by Russian Roulette). Not included in the group but still relevant were; 1 intruder at a school aged about 16, 1 infant, and 1 foetus in the womb of a school-child.
break-down
During the 1900's, 8 students (1 unintentionally), 2 parents of schoolchildren, 3 teachers (1 by suicide, 1 unintentionally) (13) were killed; 3 students (1 unintentionally), 1 professor (of a school) and 1 teacher, (5) were injured.
1910's, 7 schoolchildren (3 unintentionally) 1 intruder at a school (of about 16 years of age), 1 parent of a schoolchild and 1 schoolteacher, (10) were killed, 4 schoolchildren (2 unintentionally), 3 schoolteachers (1 unintentionally), 2 university Professors, 1 parent of a schoolchild, (plus 1 source shows "several", 1 source shows "4 were wounded"), (14 +) were injured.
1920's, 1 professor of a school, 1 parent of a schoolchild (unintentionally), 3 schoolchildren (1 unintentionally) (5) were killed, 2 boys (both unintentionally) and 3 schoolteachers (5) were injured.
1930's, 2 headmasters, 2 teachers (1 unintentionally), 1 university instructor, 3 university students (2 by suicide), 1 schoolchild (unintentionally) (9) were killed, 1 university student, 1 principal, and 1 schoolchild (self-injury) (4) were injured.
1940's, 1 superintendent of district schools, 1 principal, 1 school district business manager, 4 school teachers, 2 schoolchildren (1 by her father, 1 unintentionally), 1 university student and 1 addition individual (suicide of estranged husband of teacher) (11) were killed; 1 school secretary, 1 schoolteacher (self-injury), 2 schoolchildren (1 unintentionally) (4) were injured.
1950's, 1 quartermaster of a military academy, 1 professor and superintendent, 1 intruder (by police services), 2 schoolchildren plus 1 high school freshman, 1 school dean, 1 university secretary, 2 schoolchildren (unintentionally), 2 university students (one perpetrator alcoholically drunk, one perp deemed insane), 1 school teacher, (14) killed, 4 schoolchildren, 2 university students (perpetrators were drunk), 1 athletics coach, 1 schoolteacher (8) injured.
1960's, 3 schoolteachers (1 was not the intended target), 3 school principals (1 by suicide), 1 assistant principal, 5 schoolchildren (1 unintentionally), 2 school seniors (1 unintentionally), 1 school administrator, 3 at a university civil rights protest (by police services), 2 university students, (plus source shows 17 at a university), 1 infant, 4 college students, (28) killed, 1 teacher, 3 schoolchildren, 1 college student, 1 infant, 1 school athletic director, 27 at a university civil rights protest, (plus source shows 31 at a university) (65) injured.
1970's, 1 university professor, 3 schoolchildren (1 unintentionally), 1 high-school senior, 6 students (at two separate university protest), 7 at a university library, 1 university student (suicide), 3 teachers, 1 school superintendent, 4 school principals, a high-school athletics director, 2 passers-by, 1 by-stander, 1 custodial maintenance at a school, 1 school custodian, an elementary-school janitor, (34) killed, 1 university professor, 14 schoolchildren (2 unintentionally) plus 12 high-school students plus 1 "youth" , 21 (at two separate university protest), 4 at a university, 1 teacher, an assistant school superintendent, 1 university student, 11 passers-by, 2 police officers, 2 at a university library, 1 high-school principal, 1 individual arriving from externally to a school committing vandalism, (73) were injured.
1980's, 5 seniors (2 by suicide), 22 junior (5 by suicide, 1 unintentionally), 3 teachers, 1 substitute teacher, 1 principal, 1 assistant principal, 2 university student (by police services), 1 college professor, 1 university resident advisor, 1 university teacher, 1 associate professor, 1 Masters university student (suicide), 1 night janitor (by suicide), 2 previous student (dropped-out, 1 by suicide, 1 by police services), 1 passer-by, 1 school-bus driver (perp was later found to be insane), 1 school-janitor, (46) killed, 6 senior, 2 school students, 9 teachers, 1 vice-principal, 56 junior, 1 school-yard supervisor, 1 school-secretary, 6 students (aged about 13 to 19), 2 students at a high-school, 1 assistant-principal, 1 student-teacher (an intern), 1 adult at an elementary school basket-ball game, (87) injured.
(74 at an elementary school injured by bomb-blast not firearm)
1990's, 16 juniors (1 by Russian Roulette, 2 unintentionally, 2 by suicide, 1 by suicide-pact, 1 included an unborn child) and 2 middle-school, 10 senior (2 by suicide), 23 high-school student, 1 university graduate (a perp in a shooting, by suicide), 6 professors and 1 associate professor, 1 chairman of department at a university, 1 vice-president of academic affairs, 6 teacher (1 had abused the perp by sexual means), 1 head custodian, 1 custodian, 1 school nurse (perp found to be insane at the time of the shooting), 1 perp (suicide), 1 associate principal, 1 high-school principal, 1 cafeteria manager and a cook at a military school, 1 middle school teacher, 1 university student, 1 individual at a high-school basket-ball game, (84) killed; 18 junior (1 unintentionally), 1 senior (by suicide-pact), a temporary receiptionist in a university grievance office, 1 university custodian, 1 university graduate student, 3 undergraduate, 36 high-school student and 7 middle school student, 4 high-school teacher, 1 middle-school teacher, 3 individual attending a high-school basket-ball game, 2 assistant principal, 1 police officer, 1 school-bus driver, 2 individuals at an Alternative school, 49 at a high-school, 1 basket-ball coach, (131) injured.