Two teenagers who plotted a 'Columbine-style' massacre at their high school and drew up a 'kill list' of their classmates have been jailed for 40 years.

Alfred Dupree, 19, and Victoria McCurley, 18, wanted to set a record for the highest mass murder in recent US history and prepared a 'hit list' that included a teacher plus all of the school's black and disabled students.

The pair were arrested in October 2017 after police received a tip off they were planning to bomb Etowah High School in Woodstock, Georgia.

According to Cherokee County Assistant District Attorney Rachelle Carnesale, the two students planned to deploy smoke bombs to 'corral' students and faculty into a section of the school.

They then planned to use 'napalm and firearms' in order to 'kill as many people as they could' during the 2017 plot, prosecutors said.

Alfred Dupree (left), 19, and Victoria McCurley (right), 18, were both jailed for 40 years at Cherokee County Superior Court in Canton, Georgia, over the school bomb plot

Under the pseudonym 'Box of Anger' McCurley made a number of disturbing posts on Instagram (pictured), which referenced at a high school massacre 'starring' the Columbine killers

Cherokee Sheriff Frank Reynolds said the defendants planned to use a flammable device, similar to a Molotov cocktail, against school staff before 'picking people off' as smoke filled the halls.

Officers found homemade explosives, a 'hit list' and a map of the school building in the homes of both Dupree and McCurley.

Last Friday the couple pleaded guilty to six counts of conspiracy to commit murder one count of conspiracy to commit arson, and one count of unlawful possession of a destructive device.

Both defendants will serve 20 years in prison before serving the next 20 years on probation, according to the Atlanta Journal-Constitution.

At Cherokee County Superior Court in Canton, McCurley admitted on Friday that he told investigators: 'We'd like to get our numbers up higher than Las Vegas.'

'Las Vegas' is a reference to the October 1, 2017, mass shooting in the city, which left 58 people dead and more than 400 wounded making it the worst massacre in the US in modern times.

McCurley also posted several pictures of what appears to be the Columbine High School killers Eric Harris and Dylan Klebold, including one where she wrote the threatening message: 'Fear the nobodies'

McCurley shared multiple photos of guns and knives on her Facebook page. In this Instagram post, she shared a news story about a school providing bulletproof blankets to kids to help tackle mass shootings in school

Dupree (left) and McCurley (right) were arrested in October 2017 for plotting to attack their high school with napalm and guns

Investigators later learned the pair made a number of chilling posts on social media under secret pseudonyms about mass shootings and suicide.

One post, by McCurley, showed a picture of the High School Musical movie poster, which had been altered to read 'High School Massacre' and showed photo-shopped images of students being gunned down.

A classmate told WMAZ-TV that at lunch Dupree would make jokes about high school shootings.

Skylor Webb, 16, said: 'He would make jokes about school shootings and stuff but, he would make funny jokes about them.

'Like everybody at the table that we were sitting with at the time, laughed. So, we never really took that as a sign.'

In another post seemingly about the Columbine massacre, McCurley shared a surveillance footage still with the caption: 'Outrun my gun'

Authorities believe that if they waited to act, the pair would have carried out their plan to massacre students and teachers at Etowah High School in Cherokee County, Georgia (above)

In another provocative post, McCurley wrote 'hail Satan' on top of a drawing on a pentagram

Both Dupree and McCurley were 17 when they were arrested but were charged as adults due to the nature of their crimes.

'During the writing [of the attack plan], it wasn't serious, but then it escalated to being serious,' McCurley said in her testimony at court last week.

In court, Dupree said he was fascinated with the Columbine High School massacre of 1999.

Two students from the school in Littleton, Colorado, used bombs and guns to kill 13 students and faculty before they killed themselves in attacks that left 21 people injured.

Dupree said he first began to take an interest in the Columbine incident when he was 13-years-old.

He said he began reading extensively about the massacre and looked at photographs.

Dupree and McCurley had 'a container of flammable and combustible material with the intent that it would be used to kill, injure and intimidate students and staff at Etowah High School and to destroy Etowah High School,' according to court documents

Eric Harris (left) and Dylan Klebold (right) on tape during their shooting spree at Columbine High School in Littleton, Colorado in April 1999. Dupree and McCurley told authorities that they were inspired by the Columbine massacre which killed 15 people, including the gunmen

According to the indictment, Dupree and McCurley were arrested for 'collecting and preparing flammable and explosive materials … writing a 'kill list' … (and) creating a map of a portion of Etowah High School.'

According to court documents, the 'kill list' included the names of five students and one teacher - all of whom were in a special education class with Dupree and McCurley.

The list included nicknames and slurs, which referenced specific disabilities.

Authorities believe that if they waited to arrest the pair, they would have followed through on their plans.

Dupree and McCurley had 'a container of flammable and combustible material with the intent that it would be used to kill, injure and intimidate students and staff at Etowah High School and to destroy Etowah High School.'