Creating a merge field in word that returns Yes or No based upon a Salesforce checkbox field

Hello ... I have a checkbox field in Salsforce, <<Client_Special_Education>>.  If it is checked, I would like to return Yes on my document.  If if is not checked, I would like to return No on my document.  Here is my Word merge field, but it returns No everytime.  Even when <<Client_Special_Education>> is checked.  

IF "<<Client_Special_Education>>" = "1" "Yes" "No"  * MERGEFORMAT