Issue on Using Href

Question

I have written the following script to pop up a message using href but on clicking OK of the pop up the form is getting reset why this is happening

What I wrote is as follows

<a href="" style="text-decoration: none;" onclick="return confirm('A student need for Accommodated, Modified, or Alternate assessment is collabration with the LPAC and must be documneted in the student IEP ');">

                              ?</a>