Can you indicate which fields (and related type) are required for proper markup? I can then set some logic to validate them.
Sent a message to Aaron to find out if there was a list of required fields for each schema type or if we simply have to find out by trial and error with the rich snippet testing tool.
The names between parentheses are for microformats, the rest is microdata. When two are listed, use both.
These are aggregated from googles dev pages. Schema.org equivalents apply to fieldnames.
Should be in next
Could you classify "language teaching materials"?