Central Newcastle High School immediately paid a 10 pence shortfall which had lead the team to be disqualified from the national finals.
However, it has been told that there is no way back into the competition.
Members of the team say they are devastated.
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A Domestic Homicide Review is now set to be carried out after Bennett murdered his current and ex partners
The cadets are visiting over 300 homes in Wallsend to deliver leaflets and give residents crime prevention advice on their doorstep.
Alan Bennett killed Jodie Betteridge in front of her three children Teesside Crown Court heard. He had earlier killed partner Lynne Freeman