The list encouraged under-aged drinking, criminal acts, sexually explicit behaviour and potentially life-threatening activities.

On the list obtained by The Daily Advertiser are instructions to "steal a mobility scooter", publish a "naked TikTok", "get a happy ending from a masseurs", "sleep with someone from Saxons", "get your stomach pumped" and insert chilli sauce into private parts.

Among the higher points challenges include instructions to "lose your virginity", "get circumcised", "have sex in public (at least one random witness)", "hook up with a teacher" and "lie on train tracks".

Paula Gray, the parent of a year 12 student at the school, said her son was not involved with writing the list.

But she hopes the list was created to "one-up each other" and that the students "would have the foresight to say no to doing these things".

"I wasn't thrilled with the list when I saw it, I assumed it was a group of boys trying to put a list together that looked outrageous without the intention that anyone would ever do these things," Ms Gray said.

But following the scavenger hunt night, Riverina Police were notified after substantial damage was inflicted on Wagga High School property.

It is understood a group of Kildare students made their way onto the property after-hours in the hopes of fulfilling the scavenger hunt's 300-point challenge to "set up a pen on Kildare oval and put sheep in it".

College parent Stephen Lawler described the alleged actions of the students as being "utterly disgusting".

"This list is absolutely disgraceful. It should never have happened at all," Mr Lawler said.

"We've paid good money to send our children to this school and if this is what they're willing to write down, then what are they willing to talk about in the school yard? Why hasn't that been stamped out before they've gotten to this age?"

The requirement to produce documented evidence of involvement in the anti-social behaviour raised an eyebrow with renowned adolescent psychologist Dr Michael Carr-Gregg.

"If this is going online, then that suggests there are kids at this school who don't know how to use the internet safely," Dr Carr-Gregg said.

Describing the list as evidence of youthful indiscretion, Dr Carr-Gregg said he was "not surprised" to hear of its existence or the community's outrage.

"One of the characteristics of teenagers is their inability to predict consequences for their actions," he said.

"This [list] would cast a shadow on the school's reputation if it turns out the students have been involved in this. Is it emblematic of the school's culture? I don't know enough about the school in 2020, but I would certainly hope it's not."

In response to the circulating list, director of education at the Catholic Education Diocese of Wagga Wagga, Elizabeth O'Carrigan said the organisation "has zero tolerance for inappropriate behaviour from any student, including those in year 12".

"The vast majority of students in our schools are very respectful and well behaved. This is due to the fact that our families and school staff work hard to instil values of respect and dignity in our young people," Ms O'Carrigan said.

"Occasionally, students make errors of judgement and then have to face the consequences of their actions. At these times once again school staff and families work together to ensure our young people learn from their mistakes and become better people as a result."

As the final week of school finishes across the state, police have issued a warning to students to "think before you drink".

"By all means enjoy yourself but do so safely and don't make any decisions that you'll later regret," a spokesperson for NSW Police said.

"The police are not here to spoil the fun, but they will take action if deemed necessary."