by Katie Kausch

Today's mass shooting at Umpqua Community College in Roseburg, Oregon brought the number of school shootings this year to 45.

Since the 2012 tragedy at Sandy Hook Elementary School in Newton, Connecticut, there have been 142 school shootings in the United States. That means there has been an average of almost one school shooting per week.

The data comes from gun control advocacy organization Everytown, "a movement of Americans working together to end gun violence and build safer communities."

Below is a complete list of all 142 shootings in chronological order along with type of school (college vs. K-12), as reported by Everytown. A school shooting is defined here as any event "when a firearm was discharged inside a school building or on school or campus grounds, as documented by the press or confirmed through further inquiries with law enforcement." Shootings with fatalities are in bold.

"We don't have to live this way. Parents in other developed countries don't receive text messages that say, ‘Mom, active shooter. Love you,'" said Shannon Watts, founder of Moms Demand Action for Gun Sense in America, in a statement through Everytown provided to MTV News.

"We have a moral imperative to do more to protect our children or we are sacrificing our children to gun laws made by the gun lobby -- we must act now to stop this carnage."

1. 01/08/2013

Fort Myers, FL

Apostolic Revival Center Christian School

K-12

2. 01/10/2013

Taft, CA

Taft Union High School

K-12

3. 01/15/2013

St. Louis, MO

Stevens Institute of Business & Arts

College

4. 01/15/2013

Hazard, KY

Hazard Community and Technical College

College

5. 01/16/2013

Chicago, IL

Chicago State University

College

6. 01/22/2013

Houston, TX

Lone Star College North Harris Campus

College

7. 01/31/2013

Atlanta, GA

Price Middle School

K-12

8. 02/01/2013

Atlanta, GA

Morehouse College

College

9. 02/07/2013

Fort Pierce, FL

Indian River St. College

College

10. 02/13/2013

San Leandro, CA

Hillside Elementary School

K-12

11. 02/27/2013

Atlanta, GA

Henry W. Grady HS

K-12

12. 03/18/2013

Orlando, FL

University of Central Florida

College

13. 03/21/2013

Southgate, MI

Davidson Middle School

K-12

14. 04/12/2013

Christiansburg, VA

New River Community College

College

15. 04/13/2013

Elizabeth City, NC

Elizabeth City State University

College

16. 04/15/2013

Grambling, LA

Grambling State University

College

17. 04/29/2013

Cincinnati, OH

La Salle High School

K-12

18. 06/07/2013

Santa Monica,CA

Santa Monica College

College

19. 06/19/2013

W. Palm Beach, FL

Alexander W. Dreyfoos School of the Arts

K-12

20. 08/15/2013

Clarksville, TN

Northwest High School

K-12

21. 08/20/2013

Decatur, GA

Ronald E. McNair Discovery Learning Academy

K-12

22. 08/22/2013

Memphis, TN

Westside Elementary School

K-12

23. 08/23/2013

Sardis, MS

North Panola High School

K-12

24. 08/30/2013

Winston-Salem, NC

Carver High School

K-12

25. 09/21/2013

Savannah, GA

Savannah State University

College

26. 09/28/2013

Gray, ME

New Gloucester High School

K-12

27. 10/04/2013

Pine Hills, FL

Agape Christian Academy

K-12

28. 10/15/2013

Austin, TX

Lanier High School

K-12

29. 10/21/2013

Sparks, NV

Sparks Middle School

K-12

30. 11/01/2013

Algona, IA

Algona High/Middle School

K-12

31. 11/02/2013

Greensboro, NC

North Carolina A&T State University

College

32. 11/03/2013

Stone Mountain, GA

Stephenson High School

K-12

33. 11/21/2013

Rapid City, SD

South Dakota School of Mines & Technology

College

34. 12/04/2013

Winter Garden, FL

West Orange High School

K-12

35. 12/13/2013

Arapahoe County, CO

Arapahoe High School

K-12

36. 12/19/2013

Fresno, CA

Edison High School

K-12

37. 01/09/2014

Jackson, TN

Liberty Technology Magnet HS

K-12

38. 01/14/2014

Roswell, NM

Berrendo Middle School

K-12

39. 01/15/2014

Lancaster, PA

Martin Luther King Jr. ES

K-12

40. 01/17/2014

Philadelphia, PA

Delaware Valley Charter HS

K-12

41. 01/20/2014

Chester, PA

Widener University

College

42. 01/21/2014

West Lafayette, IN

Purdue University

College

43. 01/24/2014

Orangeburg, SC

South Carolina State University

College

44. 01/28/2014

Nashville, TN

Tennessee State University

College

45. 01/28/2014

Grambling, LA

Grambling State University

College

46. 01/31/2014

Phoenix, AZ

Cesar Chavez High School

K-12

47. 01/31/2014

Des Moines, IA

North High School

K-12

48. 02/07/2014

Bend, OR

Bend High School

K-12

49. 02/10/2014

Salisbury, NC

Salisbury High School

K-12

50. 02/11/2014

Lyndhurst, OH

Brush High School

K-12

51. 02/12/2014

Jackson, TN

Union University

College

52. 02/20/2014

Raytown, MO

Raytown Success Academy

K-12

53. 03/02/2014

Westminster, MD

McDaniel College

College

54. 03/07/2014

Tallulah, LA

Madison High School

K-12

55. 03/08/2014

Oshkosh, WI

University of Wisconsin – Oshkosh

College

56. 03/21/2014

Newark, DE

University of Delaware

College

57. 03/30/2014

Savannah, GA

Savannah State University

College

58. 04/03/2014

Kent, OH

Kent State University

College

59. 04/11/2014

Detroit, MI

East English Village Preparatory Academy

K-12

60. 04/16/2014

Tuscaloosa, AL

Stillman College

College

61. 04/21/2014

Griffith, IN

St. Mary Catholic School

K-12

62. 04/21/2014

Provo, UT

Provo High School

K-12

63. 04/16/2014

Council Bluffs, IA

Iowa Western Community College

College

64. 05/02/2014

Milwaukee, WI

Marquette University

College

65. 05/03/2014

Everett, WA

Horizon Elementary School

K-12

66. 05/04/2014

Augusta, GA

Paine College

College

67. 05/05/2014

Augusta, GA

Paine College

College

68. 05/08/2014

Georgetown, KY

Georgetown College

College

69. 05/08/2014

Lawrenceville, GA

Georgia Gwinnett College

College

70. 05/21/2014

Milwaukee, WI

Clark Street School

K-12

71. 06/05/2014

Seattle, WA

Seattle Pacific University

College

72. 06/10/2014

Troutdale, OR

Reynolds High School

K-12

73. 06/23/2014

Benton, MO

Kelly High School

K-12

74. 06/27/2014

Miami, FL

University of Miami

College

75. 08/13/2014

Fredrick, MD

Heather Ridge High School

K-12

76. 08/14/2014

Newport News, VA

Saunders Elementary

K-12

77. 09/02/2014

Pocatello, ID

Idaho State University

College

78. 09/05/2014

Savannah, GA

Savannah State University

College

79. 09/10/2014

Lake Mary, FL

Greenwood Lakes Middle School

K-12

80. 09/11/2014

Taylorsville, UT

Westbrook Elementary School

K-12

81. 09/24/2014

San Antonio, TX

Joel C. Harris Academy

K-12

82. 09/27/2014

Nashville, TN

Tennessee State University

College

83. 09/29/2014

Terre Haute, IN

Indiana State University

College

84. 09/30/2014

Albermarle, NC

Albermarle High School

K-12

85. 09/30/2014

Louisville, KY

Fern High School

K-12

86. 10/03/2014

Fairburn, GA

Langston Hughes High School

K-12

87. 10/08/2014

Elizabeth City, NC

Elizabeth City State University

College

88. 10/13/2014

Nashville, TN

Tennessee State University

College

89. 10/18/2014

Langston, OK

Langston University

College

90. 10/21/2014

Memphis, TN

A. Maceo Walker Middle School

K-12

91. 10/24/2014

Marysville, WA

Marysville-Pilchuck High School

K-12

92. 11/03/2014

Dover, DE

Delaware State University

College

93. 11/20/2014

Tallahassee, FL

Florida State University

College

94. 11/23/2014

Annapolis, MD

St. John’s College

College

95. 12/05/2014

Claremore, OK

Rogers State University

College

96. 12/16/2014

Pittsburgh, PA

Sunnyside Elementary School

K-12

97. 12/17/2014

Waterville, ME

Benton Elementary School

K-12

98. 01/15/2015

Milwaukee, WI

Wisconsin Lutheran High School

K-12

99. 01/16/2015

Ocala, FL

Vanguard High School

K-12

100. 01/20/2015

Mobile, AL

Williamson High School

K-12

101. 01/23/2015

Hardeeville, SC

Royal Live Oaks Academy

K-12

102. 01/26/2015

Roseville, MN

Hand in Hand Christian Montessori School

K-12

103. 02/02/2015

Mankato, MN

Minnesota State University

College

104. 02/ 04/2015

Frederick, MD

Frederick High School

K-12

105. 02/05/2015

Columbia, SC

University of South Carolina

College

106. 02/15/2015

Athens, GA

University of Georgia

College

107. 02/15/2015

Little Rock, AR

Lawson Elementary School

K-12

108. 02/15/2015

Merced, CA

Tenaya Middle School

K-12

109. 02/23/2015

Daytona Beach, FL

Bethune-Cookman University

College

110. 03/09/2015

Coon Rapids, MN

Northwest Passage Alternative High School

K-12

111. 03/30/2015

Springfield, MA

American International College

College

112. 04/02/2015

Beaver Falls, PA

Community College of Beaver County

College

113. 04/02/2015

Jackson, TN

Lane College

College

114. 04/04/2015

Everett, WA

Everett Community College

College

115. 04/13/2015

Goldsboro, NC

Wayne Community College

College

116. 04/17/2015

Seguin, TX

Seguin High School

K-12

117. 04/19/2015

Charlotte, NC

Johnson C. Smith University

College

118. 04/22/2015

Las Vegas, NV

Ruthe Deskin Elementary School

K-12

119. 04/27/2015

Lacey, WA

North Thurston High School

K-12

120. 05/04/2015

Cleveland, OH

Willow Elementary School

K-12

121. 05/05/2015

Conyers, GA

Conyers Middle School

K-12

122. 05/12/2015

Tempe, AZ

Corona del Sol High School

K-12

123. 05/20/2015

Robinson, TX

Robinson High School

K-12

124. 05/24/2015

Flint, MI

Flint Southwestern Classical Academy

K-12

125. 05/27/2015

Everglades City, FL

Everglades City School

K-12

126. 06/04/2015

Franklin, NC

South Macon Elementary School

K-12

127. 06/23/2015

Fort Calhoun, NE

Fort Calhoun Elementary School

K-12

128. 07/05/2015

Dallas, TX

Coppell Middle School East

K-12

129. 07/24/2015

Converse, TX

Elolf Elementary School

K-12

130. 07/27/2015

Gainesville, FL

University of Florida – Gainesville

College

131. 08/08/2015

Wichita, KS

Wichita State University

College

132. 08/08/2015

Paradise, TX

Paradise High School

K-12

133. 08/23/2015

Richmond, TX

William Velasquez Elementary

K-12

134. 08/25/2015

Augusta, GA

Hornsby Elementary School

K-12

135. 08/27/2015

Savannah, GA

Savannah State University

College

136. 09/03/2015

Sacramento, CA

Sacramento City College

College

137. 09/11/2015

Lafayette, LA

Northside High School

K-12

138. 09/14/2015

Cleveland, MS

Delta State University

College

139. 09/22/2015

Statesville, NC

Central Elementary School

K-12

140. 09/28/2015

Butte, MT

Montana Tech of the University of Montana

College

141. 09/30/2015

Harrisburg, SD

Harrisburg High School

K-12

142. 10/1/2015

Roseburg, OR

Umpqua Community College

College