for (Integer i = 0; i < Info.AgentInfoList; i++)
    {
        if (Info.AgentInfoList.PriorityNumber == 0)
        {
            return Info.AgentInfoList.PriorityNumber;
        }

//https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_json_jsonparser.htm
public class WSController {
    public JSON2Apex info { get; set; }


String jsonStr = '{"DateModifiedUtc":"2016-09-07T20:12:47.1519119Z",' +
    '"AgentInfoList":[{"Username":"Agent00@gmail.com","PriorityNumber":0}, ' +
    '{"Username":"Agent01@gmail.com","PriorityNumber":0},{"Username":"Agent02@gmail.com","PriorityNumber":0},' +
    '{"Username":"Agent03@gmail.com","PriorityNumber":0},{"Username":"Agent04@gmail.com","PriorityNumber":0},' +
    '{"Username":"Agent05@gmail.com","PriorityNumber":0},{"Username":"Agent06@gmail.com","PriorityNumber":0},' +
    '{"Username":"Agent11@gmail.com","PriorityNumber":2}]}';


//wrapper class
public class JSON2Apex
{
    public String DateModifiedUtc { get; set; }
    public List<AgentInfoList> AgentInfoList { get; set; }
}
public class AgentInfoList
{
    public String Username { get; set; }
    public String PriorityNumber { get; set; }
}
public static JSON2Apex parse(String json)
{
    return (JSON2Apex) System.JSON.deserialize(json, JSON2Apex.class);
}

public WSController()
{
    info = (JSON2Apex)parse(jsonStr);

}

public void priorityFilter()
{
    //loop through the info.AgentInfoList and pull out all of the records with a Priority number of 0.
    for (Integer i = 0; i < Info.AgentInfoList + 1; i++)
    {
        if (Info.AgentInfoList.PriorityNumber == 0)
        {
            return AgentInfoList.PriorityNumber;

        }
    }
}
}

<apex:page controller="WSController" >
<!--TO DO:: if Priority Number changes, put a <hr/> break-->

<style type="text/css">
    p { font-style: italic; }
</style>


<h1>Agent Call Distribution</h1>
<br/>
<p>Below is the current priority that Five9 will attempt to distribute new inbound phone mail leads. Loan Specialists high on the list are more likely to be offered a new sales call.</p>
<p>List last updated: {!info.DateModifiedUtc}</p>
<br/>

<apex:pageBlock >
    <apex:pageBlockTable value="{!info.AgentInfoList}" var="AgentInfo">
        <apex:column headerValue="Priority">
            <!--apex:outputtext value="!IF(info.AgentInfoList.PriorityNumber == '0', '0', ''))}"/-->
            <apex:outputField value="{!AgentInfo.priorityNumber}"/>
        </apex:column>
        <apex:column headerValue="Agent Email">
            <apex:outputText value="{!AgentInfo.Username}" />
        </apex:column>
    </apex:pageBlockTable>
</apex:pageBlock>