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SPI Index

Learn what the SIMVANA Performance Index (SPI) is on the User Portal

The SIMVANA Performance Index, or SPI, ranks learners relative to peers in their cohort for a lesson-plan section. Rank 1 is best; larger rank numbers indicate a lower relative position.

SPI is a comparison tool, not a grade or competency assessment. It helps instructors identify stronger relative performance and learners who may benefit from support

Metrics Used

SPI compares section completion percentage, total completions, total time spent, and average completion time against cohort averages. The calculation standardizes those metrics; shorter average completion times are favored. Completion percentage and average completion time each receive twice the weight of the other inputs

Reviewing SPI in the Portal
  1. Open Section Progression under Instructor Tools.
  2. Select a cohort, lesson-plan section, and date range.
  3. Review SPI Rank in the learner table.
  4. Select a learner to open their section-summary popup.
  5. Compare the learner's completion percentage, total completions, average completion time, and time spent with the displayed Cohort Avg values.

Use these underlying metrics to understand the learner's progress alongside their relative rank.

Mathematics of the SPI Index

Once the above metrics are established, the next step is to determine the mean and standard deviation for each of the metrics across all users in the cohort. These statistics serve as benchmarks for the next phase of SPI calculation.

With the means and standard deviations in place, the SPI calculation moves to the next phase: calculating the Z-Score for each user across all four metrics. The Z-Score is determined by subtracting the metric average from the user’s value and dividing by the metric’s standard deviation. Notably, the Z-Score for the "Average time per completion" metric is multiplied by -1, as lower average times are considered better.

The final SPI is computed using a weighted formula that weighs overall completion percentage in the section and average time per unit completion twice as much as total number of completions within the section and total time spent on the section.

This formula produces a value that represents the user’s SPI. All users are then ranked from low to high based on their SPI scores, providing a relative performance ranking.