public class RasmussenEnrollmentClass{

EA__c enrollment;

public RasmussenEnrollmentClass() {

}

public EA__c getEnrollment() {
if (enrollment==null) {
enrollment= [select Date_of_Birth__c, Phone_Number__c, Secondary_Phone__c, Address_1__c,
Address_2__c, City__c, Country__c, Email__c,Last_Legal_Name__c, First_Legal_Name__c,
Maiden_Name__c,Phone__c,Start_Date__c,Start_Date_2__c,Degree_Applied_For__c,
Program_Emphasis__c, State__c,Zipcode__c, Social_Security_Number__c,
Name_of_Institution__c,Name_of_Institution_2__c,Name_of_Institution_3__c,Name_of_Institution_4__c,Name_of_Institution_5__c,
Dates_Attended__c,Dates_Attended_2__c,Dates_Attended_3__c,Dates_Attended_4__c,Dates_Attended_5__c,
Degree_Received__c,Received_2__c,Received_3__c,Received_4__c,Received_5__c FROM EA__c WHERE Student_Name__c=:userinfo.getuserid()];
}

return enrollment;
}

public PageReference save() {

try {

update enrollment;
}

catch(System.DMLException e) {
ApexPages.addMessages(e);
return null;
}

return null;
}


}

VF Page

<apex:page sidebar="false" controller="RasmussenEnrollmentClass">
<center>
<table width="75%" border="0">
<tr>
<td>

<apex:sectionHeader title="Rasmussen Enrollment Agreement" subtitle="Page 1"/>
<apex:form >
<apex:pageBlock helpTitle="Click for help" helpUrl="http://www.google.com" title="ENROLLMENT INFORMATION" mode="edit" >
<apex:pageBlockButtons >
<apex:commandButton action="{!Save}" value="Save"/>
</apex:pageBlockButtons>

<apex:pageBlockSection columns="2">

<apex:inputField id="FName" value="{!enrollment.First_Legal_Name__c}" required="FALSE"/>
<apex:inputField id="LName" value="{!enrollment.Last_Legal_Name__c}" required="FALSE"/>
<apex:inputField id="SSN" value="{!enrollment.Social_Security_Number__c}" required="FALSE"/>
<apex:inputField id="DOB" value="{!enrollment.Date_of_Birth__c}" required="FALSE"/>
<apex:inputField id="Phone" value="{! enrollment.Phone_Number__c}" required="FALSE"/>
<apex:inputField id="Phone2" value="{! enrollment.Secondary_Phone__c}" required="FALSE"/>
<apex:inputField id="Address1" value="{! enrollment.Address_1__c}" required="FALSE"/>
<apex:inputField id="Address2" value="{! enrollment.Address_2__c}" required="FALSE"/>
<apex:inputField id="City" value="{! enrollment.City__c}" required="FALSE"/>
<apex:inputField id="Country" value="{! enrollment.Country__c}" required="FALSE"/>
<apex:inputField id="Email" value="{! enrollment.Email__c}" required="FALSE"/>
<apex:inputField id="Maiden" value="{! enrollment.Maiden_Name__c}" required="FALSE"/>
<apex:inputField id="Phone3" value="{! enrollment.Phone__c}" required="FALSE"/>
<apex:inputField id="State" value="{! enrollment.State__c}" required="FALSE"/>
<apex:inputField id="Zip" value="{! enrollment.Zipcode__c}" required="FALSE"/>

</apex:pageBlockSection>
</apex:pageBlock>



</apex:form>

</td>
</tr>
</table>
</center>

</apex:page>

I created a VF Page for the Customer Portal. When a customer logs in, it pulls information in Salesforce based on their user id.

I want to allow the customer to edit their information and save it. 

My issue is it is saving changes to the  First_Legal_Name__c and Last_Legal_Name__C...However none of theother fields are saving. Am I going about this wrong? Do I need to have a View page and an Edit page like how Salesforce does it on their objects?

Thank you for any help you may have.