Home | Cooper Independent School District

Documents | Cooper Independent School District

High School | Cooper Independent School District

Events | Cooper Independent School District

Operations | Cooper Independent School District

Food Service | Cooper Independent School District

Technology | Cooper Independent School District

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

duplicate-id

December 2025

November 2025

Cooper ISD

	Title / URL	Issues
	Home \| Cooper Independent School Districtwww.cooperisd.net/	12
	Documents \| Cooper Independent School Districtwww.cooperisd.net/documents/533008	6
	High School \| Cooper Independent School Districtwww.cooperisd.net/page/high-school	6
	Events \| Cooper Independent School Districtwww.cooperisd.net/events	6
	Operations \| Cooper Independent School Districtwww.cooperisd.net/page/operations	6
	Documents \| Cooper Independent School Districtwww.cooperisd.net/documents/533051	6
	Food Service \| Cooper Independent School Districtwww.cooperisd.net/page/food-service	6
	Documents \| Cooper Independent School Districtwww.cooperisd.net/documents/532947	6
	Documents \| Cooper Independent School Districtwww.cooperisd.net/documents/858208	6
	Technology \| Cooper Independent School Districtwww.cooperisd.net/page/technology	6

Fix duplicate IDs

Cooper ISD

Where this issue has occurred