Was Zimbardo’s Stanford Prison Experiment discovered to be fraudulent?

Last year i took Psychology Alevel and was surprised to find that we were to analyse The Stanford Prison Experiment. I tried to find sources supporting the replication of his findings but to no avail. Upon questioning my teachers I was told that it was an important lesson regarding the scrutiny of legitimacy in psychology. I retorted comparing this to using The wolf of wall street to educate economics students as it’s widely regarded that Zimbardo’s experiment was more so comparable to a meticulously orchestrated drama rehearsal than that of a substantial psychological study of human behaviour when under the circumstances of power disparity. Needless to say I wasn’t the favourite student and was withdrew quickly from the course. How is it that this is still taught in the UK despite all the criticism that it has faced? Please do correct me if i’m wrong!