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Considerations when comparing students across different terms

  • If the persistence rates across the terms included in analysis are significantly different, there could be significant confounding factors that could make impact analysis inaccurate.
  • In general, more confounding factors are expected when initiative participants and comparison students are matched across different terms (i.e. pre-post matching). Illume Impact considers student data that may not account for other factors that could influence student success in different time periods, such as change in global economic factors, effects from different interventions, or changes at the institution.

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