I think that I am meeting all of the criteria for this to pass, but when I submit the challenge it gives the following:

Challenge Not yet complete... here's what's wrong: 
Case records were not returned upon calling 'getNewCases'. Either the method does not exist, or it does not return the expected list of cases

Here is the challenge

Create a Visualforce page that uses a custom controller to display a list of cases with the status of 'New'.

• The page must be named 'NewCaseList'.
• The custom controller Apex class must be named 'NewCaseListController'.
• The 'NewCaseListController' Apex class must have a publically scoped method named 'getNewCases'.
• The 'getNewCases' Apex method should have the return type of 'List' and return a list of case records with the ID and CaseNumber fields and filtered to only have a status of 'New'.
• The 'NewCaseList' Visualforce page must use an apex:repeat component which is bound to 'newCases'.
• The apex:repeat component must refer to the var attribute as 'case'.
• Within the apex:repeat component, bind a apex:outputLink component to the ID of the case so that the page directs the user to the detail page of the respective case record.

Here is my page:
 

<apex:page controller="NewCaseListController">
    <apex:form >
        <apex:pageBlock title="Cases List" id="cases_list">
            
        <!-- Contacts List -->
        <apex:repeat value="{! newCases }" var="case">
            <p>
            	<apex:outputLink value="/{! case.Id }">{!case.CaseNumber}
            	</apex:outputLink> 
            </p>
        
            
        </apex:repeat>

        </apex:pageBlock>
    </apex:form>
</apex:page>

Here is my controller:
 

public class NewCaseListController {
    public static List<Case> getNewCases(){
        List<Case> cases = [SELECT Id, CaseNumber
                           FROM CASE
                           WHERE Status = 'New'];
    	return cases;
    }

}

What am I doing wrong on this? When I preview the page, it seems to be displaying what I would expect. If I change a status from new to something else, it disappears.