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Do we want to support Attempts?
SCORM is designed to allow a student to exit and return at a later date to the same point they left from. This means that each time they enter the SCORM they are using the same single attempt. Some SCORM packages are intelligent about handling re-entry, many are not. What this means is that if the student re-enters an existing attempt, if the SCORM content does not have internal logic to avoid overwriting cmi.core.lesson_status and cmi.core.score.raw, they can be overwritten by a lower score, confusing the learner.
When a SCORM sets the cmi.core.lesson_status value to 'completed', 'passed' or 'failed' then we can allow the user to create a new attempt by adding a Start new attempt checkbox to the entry page. If cmi.core.lesson_status is set to 'incomplete', 'browsed' or 'notattempted' the student can only re-enter the existing attempt.
With this we can provide settings to allow this to be controlled, some of these settings can be hidden by default as advanced options.
Number of attempts
This allows the teacher to set how many SCORM attempts the student may create - this is not how many times a student can re-enter a SCORM attempt.
Attempts grading
This allows the teacher to set how multiple SCORM attempts(not re-entries) are graded. It is important to note that a 'failed' cmi.core_lesson_status allows a new attempt to be generated but the attempts grading setting "last completed attempt" only includes 'completed' and 'passed' values in it's calculations.
Display attempt status
This displays a users SCORM attempts and how their final grade is calculated on the SCO
Force completed
This is a setting that can be used to force a SCORM package to report a 'completed' cmi.core.lesson_status if it doesn't currently set the value.
Force new attempt
This hides the Start new attempt checkbox and will force a new attempt if the previous attempt has cmi.core.lesson_status value to 'completed', 'passed' or 'failed'
http://www.vsscorm.net/2010/01/20/a-simple-scorm-1-2-content-package/
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