Was Charlie Weasley a prefect too?

Question

Chapter 9, HP and the Order of the Phoenix

Mrs. Weasley says that everyone in the family has been a Prefect, but Charlie was a Quidditch Captain.

In the sixth book, (The Half Blood Prince) Hermione detailed in here that Prefects have the same or equal status with Quidditch Captains.

Ron was also some kind of jealous because his brothers were Prefect and his brother Charlie was a Quidditch Captain.

Mrs. Weasley clearly said that everyone has been a prefect, but Charlie was a Quidditch Captain. Was Charlie an exception for what Mrs. Weasley said? But Hermione says that they just have an equal status. If that is so, Did Charlie become a Prefect?

Answer 1

Yes, Charlie Weasley was a prefect

In the Weasley family, four of the children became prefects, at the time of Order of the Phoenix.

“Drawing room . . .” he growled, as the pupil contracted. “Desk in the corner? Yeah, I see it. . . . Yeah, it’s a boggart. . . . Want me to go up and get rid of it, Molly?”
“No, no, I’ll do it myself later,” beamed Mrs. Weasley. “You have your drink. We’re having a little bit of a celebration, actually. . . .” She gestured at the scarlet banner. “Fourth prefect in the family!” she said fondly, ruffling Ron’s hair.
^{_{—Harry Potter and the Order of the Phoenix, Chapter 9}}

1. Bill Weasley
2. Charlie Weasley
3. Percy Weasley
4. Ron Weasley

It is fair to call into question Molly's initial "That's everyone in the family" line, but Note that nobody protests this number (she corrected herself from "everyone in the family [6 sons, 1 daughter]", to 4), nor do Fred and George protest by noting "Charlie wasn't a prefect", despite protesting about themselves not being included in the "whole family" claim from Molly in your question.

Also, there is this letter from Percy Weasley

Dear Ron,
I have only just heard (from no less a person than the Minister of Magic himself, who has it from your new teacher, Professor Umbridge) that you have become a Hogwarts prefect.
I was most pleasantly surprised when I heard this news and must firstly offer my congratulations. I must admit that I have always been afraid that you would take what we might call the “Fred and George” route, rather than following in my footsteps, so you can imagine my feelings on hearing you have stopped flouting authority and have decided to shoulder some real responsibility.

This further emphasizes that Fred and George were the odd ones out.

Answer 2

The statement in question also disregards Fred and George.

‘I don’t believe it! I don’t believe it! Oh, Ron, how wonderful! A prefect! That’s everyone in the family!’

‘What are Fred and I, next-door neighbours?’ said George indignantly, as his mother pushed him aside and flung her arms around her youngest son.

From the outset we must not take this line literally since she forgot Fred and George who are sitting right next to her.

The books only ever mention that Charlie was Quidditch captain outright

You could say I’ve got a lot to live up to. Bill and Charlie have already left – Bill was Head Boy and Charlie was captain of Quidditch. Now Percy’s a Prefect.

Edit: Its still unclear Charlie was a prefect, just implied.

As Ghoti has found later in the chapter she does specifically say Ron is the 4th prefect.

We’re having a little bit of a celebration, actually ...’ She gestured at the scarlet banner. ‘Fourth prefect in the family!’ she said fondly, ruffling Ron’s hair.

This quote implies that Charlie is also was a prefect since George and Fred clearly were not. However, even here it doesn't spell it out that Charlie was a prefect, and so you could still say that she could be including herself or Mr. Weasly as one of the four, however, it does strongly imply that she means her children in this instance.

When Harry is made quidditch captain

‘That gives you equal status with prefects!’ cried Hermione happily. ‘You can use our special bathroom now, and every- thing!’

‘Wow, I remember when Charlie wore one of these,’ said Ron,

While less likely now, she could still simply mean that 4 of her children achieved the "status" of a prefect.