Feature request: store and load RoboTutor user profiles

[JackMostow]

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Lose user profiles when version number changes.

Describe the solution you'd like
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Save and load them.

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RoboTutor user profile contains:
Student model = position in each content area matrix (literacy, numeracy, stories)
Mode in each content area = PLACEMENT or PROMOTION
Future student model might contain more detailed information about individual activities, items, or skills
E.g. Knowledge tracing maintains estimate of Pr(knows skill)

[JackMostow]

AFAWK, RoboTutor itself doesn't use sqlite for student model or anything else. So where does it store student position in matrix? If in a file, where?