Contact info not showing with address book policy

Hello,

I'm in the middle of setting up Exchange 2013 for our college. We wanted to hide all the distribution groups in contacts on students OWA. I created an address book policy to include everyone except distribution groups. That seemed to work perfectly, except students cannot see information on contacts (i.e. email address, department, job title). To pinpoint the issue I removed the APB from a test2013 student and they're able to see contact information again, but of course now they can see the default GAL and groups again.

I would post some screenshot examples, but this forum still wants to verify my account, even though ive already confirmed my email address for alerts?

I used these commands to create the APB. Is there anything extra I need to do?

New-AddressList -Name "AL Students" -RecipientFilter {(RecipientType -eq 'UserMailbox')}

New-GlobalAddressList -Name "GAL Students" -RecipientFilter {(RecipientType -eq 'UserMailbox')}

New-OfflineAddressBook -Name "OAB Students" -AddressLists "GAL Students"

New-AddressList -Name BlankRoom -RecipientFilter {(Alias -ne $null) -and ((RecipientDisplayType -eq 'ConferenceRoomMailbox') -or (RecipientDisplayType -eq 'SyncedConferenceRoomMailbox'))}

Set-AddressBookPolicy -Identity "ABP Students" -AddressLists "Executive Staff","Boarding Staff","Admin Staff","Students 2013","Students 2014","Students 2015","Students 2016","Students 2017","Students 2018","All Teachers" -OfflineAddressBook "\OAB Students" -GlobalAddressList "\GAL Students" -RoomList "\BlankRoom"