Mandatory Metadata Items

Item (click for additional details)	Use	Description	Data Type (2)
cmi.core._children	RO	List of supported elements in cmi.core	CMIString255
cmi.core.student_id	RO	Returns student's ID set by the LMS	CMIIdentifier
cmi.core.student_name	RO	Returns student's name (last, first middle initial)	CMIString255
cmi.core.lesson_location	RW	SCO keeps this updated to point to the current page within the SCO	CMIString255
cmi.core.credit	RO	"credit" or "no credit" set by LMS using information from lesson_status	CMIVocabulary
cmi.core.lesson_status	RW	SCO sets to "passed", "completed", "failed", "incomplete", "browsed" or "not attempted"	CMIVocabulary
cmi.core.entry	RO	LMS sets to "ab-initio" the first time the learner enters the SCO and to "resume" when the learner leaves and then returns to the SCO	CMIVocabulary
cmi.core.score._children	RO	Returns list of supported elements in cmi.core.score	CMIString255
cmi.core.score.raw	RW	SCO sets to reflect score in SCO	CMIDecimal or CMIBlank
cmi.core.total_time	RO	Total time in all attempts in this SCO, based upon session_time sent by SCO	CMITimespan
cmi.core.session_time	WO	Total time in the SCO in this attempt	CMITimespan
cmi.core.exit	WO	Reason set by SCO for leaving: "time-out", "suspend", "logout" or ""	CMIVocabulary

Notes:

(1). Abbreviations: Maintenance of all items designated as RO (Read Only) are the sole responsibility of the LMS. Other items (RW, Read & Write, and WO, Write Only) are the sole responsibility of the SCO.

(2). Data types are described in detail in the SCORM Packaging Specification. CMIString255 is a string variable with individual elements separated by commas. CMIVocabulary denotes an item that can assume only one of a specific number of possibilities. CMIDecimal is a character representation of a number. CMIBlank is the empty string. CMITimespan can have a value such as HHHH:MM:SS.SS where H is hours, M is minutes and S is seconds. A more detailed description of these data type is contained in this web page.