View source for Proquest K-12

{{Organization
|Affiliation=Proquest LLC
|Mainurl=http://www.proquestk12.com/
|Resource URL=http://www.proquestk12.com/trialsignup.shtml,http://homeworkcentral.com/
|Tag=educational products
|Organization Type=commercial company
|Status=good
|Open or Free Statement=no
|License short name=copyright
}}
This is commercial but it has a free trial and certain free resources.