I heard you will dismiss first Rector about student one’s observed rudely (5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

I need help here: to OGLE is to ‘eye (‘I heard’) impertinently or lecherously'(Chambers) and R = Rector but I can’t see ‘you will dismiss first’ – and OGLE and OGLER are too close Thanks to James @1 for the prompt help: [r]OGER (I heard you) minus the first r (rector) round L (student)