OMG plz u did not just call it
plea bargaining!!! (and you call urselves HSC students! shame!)
In Australia its
Charge negotiation ...if you don't believe me check out this link.
http://www.nt.gov.au/justice/dpp/html/guidelines/charge_negotiation.shtml
Plea bargaining is american, the only thing that is different is the term, the principle is the same, but if you use the correct terminology the markers in the HSC will think ur smart becuse your up to date and current with legislation etc.
Cheerio