Thinking about categories

We're going to have to provide a lot of flexibility to searches on Elimushare. This means we need to categorize all entries into the database carefully. Some suggestions:

• Book
• Journal article
• Blog
• Newspaper
  
• Unpublished essay
  

• Early Childhood
  
• Primary
  
• Secondary
• Tertiary
• Vocational

• Mathematics
• Science
• Social Science

Any other ideas out there?