I would also advise Transfiguration

‘I would also advise Transfiguration, because Aurors frequently need to Transfigure or Untransfigure in their work. And I ought to tell you now, Potter, that I do not accept students into my NEWT classes unless they have achieved “Exceeds Expectations” or higher at Ordinary Wizarding Level. I'd say you're averaging “Acceptable” at the moment, so you'll need to put in some good hard work before the exams to stand a chance of continuing. Then you ought to do Charms, always useful, and Potions. Yes, Potter, Potions,’ she added, with the merest flicker of a smile. ‘Poisons and antidotes are essential study for Aurors. And I must tell you that Professor Snape absolutely refuses to take students who get anything other than “Outstanding” in their OWLs, so —’

Professor Umbridge gave her most pronounced cough yet.

‘May I offer you a cough drop, Dolores?’ Professor McGonagall asked curtly, without looking at Professor Umbridge.

‘Oh, no, thank you very much,’ said Umbridge, with that simpering laugh Harry hated so much. ‘I just wondered whether I could make the teensiest interruption, Minerva?’

‘I daresay you'll find you can,’ said Professor McGonagall through tightly gritted teeth.

‘I was just wondering whether Mr. Potter has quite the temperament for an Auror?’ said Professor Umbridge sweetly.

‘Were you?’ said Professor McGonagall haughtily. ‘Well, Potter,’ she continued, as though there had been no interruption, ‘if you are serious in this ambition, I would advise you to concentrate hard on bringing your Transfiguration and Potions up to scratch. I see Professor Flitwick has graded you between “Acceptable” and “Exceeds Expectations” for the last two years, so your Charmwork seems satisfactory. As for Defence Against the Dark Arts, your marks have been generally high, Professor Lupin in particular thought you—are you quite sure you wouldn't like a cough drop, Dolores?’

‘Oh, no need, thank you, Minerva,’ simpered Professor Umbridge, who had just coughed her loudest yet. ‘I was just concerned that you might not have Harry's most recent Defence Against the Dark Arts marks in front of you. I'm quite sure I slipped in a note.’

‘What, this thing?’ said Professor McGonagall in a tone of revulsion, as she pulled a sheet of pink parchment from between the leaves of Harry's folder. She glanced down it, her eyebrows slightly raised, then placed it back into the folder without comment.

‘Yes, as I was saying, Potter, Professor Lupin thought you showed a pronounced aptitude for the subject, and obviously for an Auror—’

‘Did you not understand my note, Minerva?’ asked Professor Umbndge in honeyed tones, quite forgetting to cough.

‘Of course I understood it,’ said Professor McGonagall, her teeth clenched so tightly the words came out a little muffled.

‘Well, then, I am confused ... I'm afraid I don't quite understand how you can give Mr. Potter false hope that—’

‘False hope?’ repeated Professor McGonagall, still refusing to look round at Professor Umbridge. ‘He has achieved high marks in all his Defence Against the Dark Arts tests—’

‘I'm terribly sorry to have to contradict you, Minerva, but as you will see from my note, Harry has been achieving very poor results in his classes with me—’

‘I should have made my meaning plainer,’ said Professor McGonagall, turning at last to look Umbridge directly in the eyes. ‘He has achieved high marks in all Defence Against the Dark Arts tests set by a competent teacher.’

Professor Umbridge's smile vanished as suddenly as a light bulb blowing. She sat back in her chair, turned a sheet on her clipboard and began scribbling very fast indeed, her bulging eyes rolling from side to side. Professor McGonagall turned back to Harry, her thin nostrils flared, her eyes burning.

‘Any questions, Potter?’

‘Yes,’ said Harry. ‘What sort of character and aptitude tests do the Ministry do on you, if you get enough NEWTs?’

‘Well, you'll need to demonstrate the ability to react well to pressure and so forth,’ said Professor McGonagall, ‘perseverance and dedication, because Auror training takes a further three years, not to mention very high skills in practical Defence. It will mean a lot more study even after you've left school, so unless you're prepared to—’

‘I think you'll also find,’ said Umbridge, her voice very cold now, ‘that the Ministry looks into the records of those applying to be Aurors. Their criminal records.’

‘—unless you're prepared to take even more exams after Hogwarts, you should really look at another—’

‘Which means that this boy has as much chance of becoming an Auror as Dumbledore has of ever returning to this school.’

‘A very good chance, then,’ said Professor McGonagall.

‘Potter has a criminal record,’ said Umbridge loudly.

‘Potter has been cleared of all charges,’ said McGonagall, even more loudly.

Professor Umbridge stood up. She was so short that this did not make a great deal of difference, but her fussy, simpering demeanour had given place to a hard fury that made her broad, flabby face look oddly sinister.

‘Potter has no chance whatsoever of becoming an Auror!’

Professor McGonagall got to her feet, too, and in her case this was a much more impressive move: she towered over Professor Umbridge.

‘Potter,’ she said in ringing tones, ‘I will assist you to become an Auror if it is the last thing I do! If I have to coach you nightly, I will make sure you achieve the required results!’