’… may well choose to leave… the indignity of it… on probation… we shall see… how she dares…’
She obviously reckons Trelawney’s an old fraud, too… looks like she’s put her on probation.
Trelawney’s on probation already…’
Between his Quidditch ban and worry about whether or not Hagrid was going to be put on probation, he felt highly resentful towards the place at the moment.
’Jus’ busy, yeh know, usual stuff — lessons ter prepare — couple o’ salamanders got scale rot — an’ I’m on probation,’ he mumbled.
’You’re on probation?’ said Ron very loudly, so that many of the passing students looked around curiously.
’Sorry — I mean — you’re on probation?’ he whispered.
Voldemort’s got Sirius — ’You are on probation!’ shrieked Professor Umbridge, and Snape looked back at her, his eyebrows slightly raised.
* The fact that Hagrid was now on probation became common knowledge within the school over the next few days, but to Harry’s indignation, hardly anybody appeared to be upset about it; indeed, some people, Draco Malfoy prominent among them, seemed positively gleeful.
Under the terms of Educational Decree Number Twenty-three, the High Inquisitor of Hogwarts has the power to inspect, place upon probation and sack any teacher she — that is to say, I — feel is not performing to the standards required by the Ministry of Magic.
There are no more uses of "probation" in the book.
Show samples from other sources
The judge sentenced her to three years of probation instead of sending her to prison.
I start the new job next week, but my medical insurance will not begin until after a sixty day probationary period.