[Hermione]'s morning [Daily Prophet] brings news that [Dolores Umbridge] has been named the [Hogwarts] High Inquisitor, with the power to evaluate the school's teachers. The students then head off for class, wondering what this will mean for their classes.
After sitting through [History of Magic] without incident, [Harry] heads off to [Potions], where he learns he got a D on his [moonstone] essay. He works hard to deliver a quality potion, and ends the lesson having done so fairly successfully.
On the way out of [Potions] [Hermione] hints at asking the scores [Ron] and [Harry] received on their essays for [Snape], and then sits down at lunch talking with [Fred and George] about the [O.W.L.] scoring system, before they all head off to afternoon classes.
Inspections and More Detentions
In [Divination] is a surprise - [Professor Umbridge] inspecting [Trelawney]'s lesson. Trelawney fails the inspection dramatically, which earns her empathy even from [Harry] and [Ron].
[Umbridge]'s [Defence Against the Dark Arts] lesson is once again interrupted by [Hermione], who announces that she's read the entire book, and once again leads to disaster for [Harry] when he states that [Quirrell] had been possessed by [Voldemort], and lands himself in another week of [detention].
At lunch [Harry] draws the ire of both [Angelina] and [Professor McGonagall] for landing himself in another week of [detentions] with [Umbridge], and he gets upset with Hermione for siding with McGonagall.
In [Transfiguration] [Umbridge] is once again parked in the corner to observe, only this time [McGonagall] refuses to let her interrupt class and Umbridge stays quiet, much to the delight of the students.
[Umbridge] also follows the fifth years to [Care of Magical Creatures], where [Professor Grubbly-Plank] seems to pass her inspection just fine but [Harry] makes a snide remark about [Malfoy] and earns an extra night of [detention].
Back in the [common room] after another [detention], [Harry] finds [Ron] and [Hermione] waiting for him with a bowl of [essence of murtlap] to help his bleeding hand. Hermione also suggests that Harry begin teaching defence lessons to compensate for [Umbridge]'s poor excuse for classes. After initially getting upset, Harry agrees to think it over, and heads off to bed.
Chapter 16 - "In the Hog's Head" - In which Harry, Hermione, and Ron hold a meeting at the Hog's Head to discuss with other students the possibility of Harry giving them Defence lessons, and Hermione tells Ron and Harry that Ginny is dating Michael Corner.