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{{short description|Wikipedia editing guideline}}
{{redirect|WP:CLASSES|the catalogue of CSS classes|WP:CLASS}}
{{pp-move-indef|small=yes}}
{{subcat guideline|editing guideline|Version 1.0 Editorial Team Assessment|WP:ASSESS|WP:1.0/A}}

The following system is used by the Wikipedia community to assess the quality of an article on a particular topic. The system is based on a letter scheme which reflects principally how factually complete the article is, though [[WP:MOS|language quality]] and [[WP:Layout|layout]] are also factors. 

The quality assessments are mainly performed by Wikipedia editors, who tag talk pages of articles. These tags are then [[Javasatu:Version 1.0 Editorial Team/Index|collected by a bot]], which generates output such as a [[Javasatu:Version 1.0 Editorial Team/Chemistry articles by quality log|log]] and [[Javasatu:Version 1.0 Editorial Team/Chemistry articles by quality statistics|statistics]]. For more information, see ''[[Javasatu:Version 1.0 Editorial Team/Using the bot|Using the bot]]''. (Note that when more than one WikiProject has rated an article, the bot will take the best rating as the rating of the overall article.) The WP:1.0 team is planning to set things up to use a ''second'' bot to select articles, based on the assessments performed by WikiProjects.

Two levels, GA (Good Article) and FA (Featured Article), are assessments made by independent editors. Other levels are assessed by individual WikiProject editors. GAs are generally reviewed by a single editor, and FA by several editors. Candidates are nominated by listing them at ''[[WP:Good article nominations]]'' and ''[[WP:Featured article candidates]]''. Judgments are made according to the criteria at ''[[WP:Good article criteria]]'' and ''[[WP:Featured article criteria]]'', and the results are listed at ''[[WP:Good articles]]'' and ''[[WP:Featured articles]]''.

It is vital that editors not take these assessments of their contributions personally. It is understood that we each have our own opinions of the priorities of the objective criteria for a perfect article. Generally an active project will develop a consensus, though be aware that different projects may use their own variation of the criteria more tuned for the subject area, such as [[Javasatu:WikiProject Military history/Assessment#Quality scale|this]]. More active WikiProjects have an [[:Category:WikiProject assessments|assessment team]]. If you contribute a lot of content to an article you may request an independent assessment.

At present this assessment system is in use in the Wikipedia 1.0 project, and in several hundred WikiProjects on the English Wikipedia. As of November 2022, [[#Statistics|over seven million articles]] have been assessed. Several other languages are also using this assessment system or a derivative thereof.

== Grades ==
<noinclude>{{mbox|text=The [[WP:ASSESS|assessment ratings]] mentioned here have '''no relationship whatsoever''' to [[academic grades]] or [[review|review scores]] like A/B/C/D/F or other rating systems (10-point scale, 5-star system, etc.) that you might see on [[homework]] and [[product review]]s. They represent the amount of work needed to bring the article to the next rating, which depends on <u>both</u> the quality of the writing <u>and</u> the depth of coverage of the topic, which greatly [[WP:CL-RULE|varies by subject]].<p>Note that the differences between ''Stub'', ''Start'', and ''C'' classes are fairly subjective; at those ratings, the best way to improve the article is to look at the specific criteria for ''B''-class and aim to satisfy those. Specific feedback can often be obtained on a relevant [[WP:WikiProject|WikiProject]]'s talk page. Those can usually be found the talk page of the article, but [[WP:WikiProject|searching for them]] can often reveal more topical projects. For instance, if you wrote about a Kenyan astronomer, you might want to search for "Biography", "Kenya", and "Astronomy" to find [[WP:WikiProject Biography|WikiProject Biography]], [[WP:WikiProject Kenya|WikiProject Kenya]] and [[WP:WikiProject Astronomy|WikiProject Astronomy]].}}</noinclude>
{{anchor|Quality scale}}
{{Grading scheme}}
'''Note:''' Some WikiProjects omit some of the standard classes, most often A-class, especially when they lack an assessment team.

== Non-standard grades ==
{{shortcut|WP:NONSTANDARDCLASS}}

Some [[Javasatu:WikiProject|WikiProjects]] use other assessments for mainspace content that do not fit into the above scale:

{| class="wikitable" style="width: 100%;"
|+ Other WikiProject assessments
|-
! Label
! Criteria
! Reader's experience
! Editing suggestions
! Example
|-
| {{Current-Class}}
|A topic where details are subject to change often. The article covers an event or topic that is currently ongoing, such as a natural disaster or sports season.
| Amount of meaningful content varies over time as the projected event goes on.
| Material added might quickly become obsolete.
| {{oldid|2019–20 South-West Indian Ocean cyclone season|909696996|2019–20 South-West Indian Ocean cyclone season}} (as of August 2019)
|-
| {{Future-Class}}
| A topic where details are subject to change often. The article covers a future topic, e.g. a forthcoming election or album release, and article content may change as new information arises.
| Amount of meaningful content varies over time as the projected event draws near.
| Material added might be speculative and should be carefully sourced.
| {{oldid|Next United Kingdom general election|950155532|Next United Kingdom general election}} (as of October 2019)
|-
| {{SL-Class}}
| A list article that would otherwise be regarded as a stub. Used only by [[:Category:SL-Class articles|a few WikiProjects]].
| May be incomplete or provide little context.
| Any editing or additional material can be helpful. The provision of meaningful content should be a priority.
| {{oldid|Pink flowers|907748092|Pink flowers}} (as of July 2019)
|-
| {{SIA-Class}}
| Any [[Javasatu:Set index articles|set index article]] (SIA) page falls under this class. These are list articles about a set of items of a specific type that also share the same (or similar) name.
| The page lists related items of the same name.
| An SIA need not follow the formatting rules for disambiguation pages
| {{oldid|USS Yorktown|842550147|USS Yorktown}} (as of May 2018)
|-
| {{Disambig-Class}}
| Any [[Javasatu:Disambiguation|disambiguation]] page falls under this class.
| The page directs the reader to other pages of the same title.
| Additions should be made as new articles of that name are created.
| {{oldid|Jackson|911538376|Jackson}} (as of August 2019)
|-
| {{Redirect-Class}}
| Any [[Javasatu:Redirect|redirect]] falls under this class.
| The page does not display any article content and redirects to a related topic.
| Ensure that the redirect is appropriately [[Javasatu:Categorizing redirects|categorised]].
| {{oldid|American breakfast|745451474|American breakfast}} (as of October 2016)
|-
| {{Merge-Class}}
| Any redirect that is the result of a [[Javasatu:Merging|page merge]] and has non-trivial history. Used only by [[:Category:Merge-Class articles|a few WikiProjects]].
| The page does not display any article content and redirects to a related topic.
| Tag the redirect page with {{tl|R from merge}}
| {{oldid|Tamara (Dungeons & Dragons)|855160584|Tamara (Dungeons & Dragons)}} (as of August 2018)
|-
| {{Needed-Class}}
| May be used to identify redirects that could be expanded into articles, or articles with content that could be [[Javasatu:Splitting|split]] off to form a new page.
| Content may not yet exist for the desired topic.
| Editors are encouraged to [[Javasatu:Be bold|be bold]] when updating the encyclopedia.
| {{oldid|Free City of Mainz|828817613|Free City of Mainz}} (as of March 2018)
|-
| {{NA-Class}}
| A page that does not fit into any other category. Used as a "catch-all" by all WikiProjects.
| Depends on the type of page.
| Depends on the type of page.
| N/A
|}

See also [[Javasatu:WikiProject Military history/Assessment]] which utilises a parallel scheme of "CL-Class", "BL-Class" and "AL-Class" for list articles.

=== Non-mainspace content ===
Further grades are commonly used by WikiProjects to categorise relevant pages in other [[Javasatu:Namespace|namespaces]]. The precise application of these grades may vary depending on their usage by individual WikiProjects.

{| class="wikitable" style="width: 100%;"
|+ Non-mainspace assessments
|-
! Label
! Criteria
! Example
|-
| {{Category-Class}}
| Any [[Help:Category|category]] falls under this class.
| [[:Category:George Orwell]]
|-
| {{Draft-Class}}
| Any [[Javasatu:Drafts|draft]] falls under this class. These are typically found in the Draft namespace, but may also be in the [[Javasatu:User pages|User namespace]].
| [[Draft:Example]]
|-
| {{File-Class}}
| Any [[Help:Files|file]] falls under this class; may also include [[Commons:Commons:Timed Text|timed text]] pages.
| [[:File:Flag of Australia.svg]]
|-
| {{FM-Class}}
| Any file which has attained [[Javasatu:Featured pictures|featured picture]] or [[Javasatu:Featured sounds|featured sound]] status.
| [[:File:Felis silvestris silvestris.jpg]]
|-
| {{Portal-Class}}
| Any [[Javasatu:Portal|portal]] falls under this class.
| [[Portal:Biography]]
|-
| {{Project-Class}}
| Any [[Javasatu:Project namespace|project]] page falls under this class; may also include [[Help:About help pages|help pages]].
| [[Javasatu:WikiProject Japan]]
|-
| {{Template-Class}}
| Any [[Javasatu:Template namespace|template]] falls under this class; may also include [[Javasatu:Lua|modules]] or [[Javasatu:Userboxes|userboxes]].
| [[Template:Magnapop]]
|-
| {{User-Class}}
| Any [[Javasatu:User pages|user page]] falls under this class.
| [[User:Legoktm/afcnew.js]]
|}

Note that some WikiProjects deal exclusively with non-mainspace content and may use their own customised assessment schemes tailored to a specific purpose: see [[Javasatu:WikiProject Portals/Assessment]] for one such example.

For an index of all WikiProject assessment pages, see [[:Category:WikiProject assessments]].

== Evolution of an article – an example ==
{{see also|outreach:Life of an Article}}
{{outdated|[[Atom]] now downgraded to B-class|date=July 2023}}
This clickable imagemap, using the article "[[Atom]]" as an example, demonstrates the typical profile for an article's development through the levels. Hold the mouse over a number to see key events, and '''click on a number''' to see that version of the article. Please note that until 2008, a C-class rating did not exist on the project, and as such this grading is retroactive. Also, in 2006 references were much less used, and inline references were quite rare; a barely-B-Class article today would typically have many more references than this article did in late 2006.

<imagemap>
File:AssessmentTimeline.png|800px|
rect 15 160 75 221 [//en.wikipedia.org/w/index.php?title=Atom&oldid=234326 The article was a stub when its earliest surviving edit was made on 1 Oct 2001.]
rect 38 101 111 158 [//en.wikipedia.org/w/index.php?title=Atom&direction=prev&oldid=367342 By 8 Oct 2001, it approached the upper bound of a stub.]
rect 708 166 793 225 [//en.wikipedia.org/w/index.php?title=Atom&direction=next&oldid=234334 On 20 Sep 2002, more useful content was added and it became Start.]
rect 1891 166 1944 225 [//en.wikipedia.org/w/index.php?title=Atom&direction=prev&oldid=4259089 3 Jun 2004, Start; meaningful amount of information, but more structuring is needed.]
rect 1930 111 1982 165 [//en.wikipedia.org/w/index.php?title=Atom&direction=prev&oldid=4511956 24 Jun 2004, a useful image is added; now it is at the upper bound of Start.]
rect 2090 164 2158 225 [//en.wikipedia.org/w/index.php?title=Atom&oldid=5986276 On 18 Sep 2004, some sections have expanded and it just reaches C-class.]
rect 2757 156 2822 213 [//en.wikipedia.org/w/index.php?title=Atom&oldid=22264876 By 31 Aug 2005 it has been expanded, but needs refs; it can be comfortably called C-class.]
rect 2946 156 3006 215 [//en.wikipedia.org/w/index.php?title=Atom&oldid=31067639 12 Dec 2005, enough content & structure for a respectable article. In spite of its lack of in-line citations, the article is approaching the upper limit of C-Class. If it were properly referenced, we could have considered rating it B-class.]
rect 3419 154 3488 215 [//en.wikipedia.org/w/index.php?title=Atom&oldid=70632170 By 19 Aug 2006, several new images and contents from a cited book have been added; just makes B-Class.]
rect 3820 156 3905 218 [//en.wikipedia.org/w/index.php?title=Atom&oldid=117195118 By 23 Mar 2007, new content and refs have been added; easily B-class.]
rect 4202 151 4284 211 [//en.wikipedia.org/w/index.php?title=Atom&oldid=164550316 17 Oct 2007, nominated for a Peer Review.]
rect 4399 154 4489 214 [//en.wikipedia.org/w/index.php?title=Atom&oldid=189985194 Review closes on 9 Feb 2008, after addressing MoS / inline cite issues; becomes A-Class.]
rect 4400 93 4490 151 [//en.wikipedia.org/w/index.php?title=Atom&oldid=190441059 10 Feb 2008, nominated and listed as GA.]
rect 4445 36 4528 92 [//en.wikipedia.org/w/index.php?title=Atom&oldid=192086950 12 Feb 2008, FAC; promoted to FA 18 Feb.]

desc bottom-left
</imagemap>

==Importance assessment==
There is a [[Javasatu:Version 1.0 Editorial Team/Release Version Criteria#Priority of topic|separate scale for rating articles for ''importance'' or ''priority'']], which is unrelated to the ''quality'' scale outlined here. Unlike the quality scale, the priority scale varies based on the project scope. See also the template {{tl|importance scheme}}.

==Statistics==
The [[User:WP 1.0 bot|WP 1.0 bot]] tracks assessment data (article quality and importance data for individual WikiProjects) assigned via talk page banners. If you would like to add a new WikiProject to the bot's list, please read the instructions at [[Javasatu:Version 1.0 Editorial Team/Using the bot]].

The global summary table below is computed by taking the highest quality and importance rating for each assessed article in the main namespace.

{{Javasatu:Version 1.0 Editorial Team/Statistics}}

== FAQ ==

=== Purpose ===

; What is the purpose of article assessments? : The assessment system allows a WikiProject to monitor the quality of articles in its subject areas, and to prioritize work on these articles. The ratings are also used by the [[WP:1.0|Wikipedia 1.0 program]] to prepare for static releases of Wikipedia content.
; Are these ratings official? : Not really; these ratings are meant primarily for the internal use of the project, and usually do not imply any official standing within Wikipedia as a whole.

=== Assessing articles ===

; Who can assess articles?
: In general, anyone can add or change an article's rating. However, assessing an article as [[Javasatu:Version 1.0 Editorial Team/Assessment/A-Class criteria|"A-Class"]] generally requires the agreement of at least two editors, and the "GA" and "FA" labels should only be used on articles that have been reviewed and are currently designated as [[Javasatu:Good articles|good articles]] or [[Javasatu:Featured articles|featured article]]s, respectively. Individual WikiProjects may also have more formal procedures for rating an article, and please note that the WikiProject bears ultimate responsibility for resolving disputes.
; How do I assess an article?
: Consult the [[#Quality scale|quality scale]] above; once you have chosen the level that seems to be closest to the article, set the ''class'' parameter in the WikiProject banner template to the level's name (omitting "Class" from the end).  For example, to rate an article as "B-Class", use <code>|class=B</code> in the banner. Again, the "FA" and "GA" labels should not be added to articles unless they are currently designated as such. Tools in the [[#See also|See also]] section can help with the assessment process.
; How can I ask for an article to be assessed?
: To have an independent editor review an article, post a request at [[Javasatu:WikiProject Wikipedia/Assessment#Requesting an assessment]].

=== Common concerns ===

; Someone put a project banner template on an article, but it's not really within the WikiProject's scope.  What should I do?
: Because of the large number of articles we deal with, we occasionally make mistakes and add tags to articles that shouldn't have them. If you notice one, feel free to remove the tag, and optionally leave a note on the article's talk page (or directly with the person who tagged the article). See [[Javasatu:WikiProject Council/Guide#Article tagging]] for more information.
; What if I don't agree with a rating?
: Feel free to change it—within reason—if you think a different rating is justified; in the case of major disputes, the WikiProject as a whole can discuss the issue and come to a consensus as to the best rating.
; Aren't the ratings subjective?
: Yes, they are somewhat subjective, but it's the best system we've been able to devise. If you have a better idea, please don't hesitate [[WT:Content assessment|to let us know]]!
; Why didn't the reviewer leave any comments?
: Due to the volume of articles that need to be assessed, we are unable to leave detailed comments in most cases. If you have particular questions, you might ask the person who assessed the article; they will usually be happy to provide you with their reasoning. [[Javasatu:Peer review]] is the process designed to provide detailed comments.

== See also ==
* [[Javasatu:Article assessment (historical)]], the previous version superseded by this version.
* [[Javasatu:Assessing articles]], an essay on the criteria and purpose of article assessments
* [[Javasatu:Metadata gadget]], a script (and [[Javasatu:Gadget|gadget]]) that finds articles' assessment information from the talk page and puts it in the article's header.
* [[User:Evad37/rater]], a currently maintained tool that helps fill in assessments and other parameters for WikiProject banners. A complete remake of  [[User:Kephir/gadgets/rater]], a script for tagging articles' talk pages with assessment information.
* [[User:N8wilson/AQFetcher]], a script that stylizes links on Wikipedia according to the assessed quality of the target article.
* [[mw:Article feedback]], an initiative of the [[:foundation:|Wikimedia Foundation]] to engage Wikimedia readers in the assessment of article quality, one of the five priorities defined in the [[strategy:Strategic Plan/Movement Priorities|strategic plan]]
* [[Javasatu:Data mining Wikipedia]], a potential use of WikiProject assessments
* {{Cl|Articles by quality}} - List of articles by their quality

[[Category:Wikipedia 1.0 assessments| ]]
[[Category:Wikipedia project content guidelines]]
[[Category:Wikipedia article assessment| ]]
[[Category:Wikipedia article assessment criteria]]