What is the Student Score?
This is one of the most useful metrics on Atom as it accounts for the difficulty of the questions a child is answering, rather than raw accuracy.
Understanding the Student Score
The Student Score estimates how likely a student is to answer a question of average difficulty correctly.
It is shown as a percentage out of 100, where 50% represents the midpoint.
For example, if Student A has a Student Score of 57.8 in English, they have a 57.8% chance of answering an average-difficulty English question correctly.
Why this score is different from a raw percentage
Atom uses an adaptive platform, which means the question difficulty adapts based on the student’s previous answer.
Because of this, two pupils could both answer 70% of their questions correctly, but still have different Student Scores:
This is usually a result of where the incorrect answers were within the activity.
Questions will begin at an average level of difficulty. A student who gets answers wrong at the beginning will continue at an easier level and take time to progress to more challenging content.
A student who got all of their answers correct at the beginning has progressed quickly to more challenging questions. Although they may get some of these wrong, the difficulty level of the incorrect answers is much higher than the first student.
The pupil who answered the harder questions would receive a higher Student Score, because the score reflects both:
- How many questions were answered correctly, and
- How difficult those questions were
Why the Student Score is useful
The Student Score gives teachers a more accurate picture of a child’s understanding of an assignment than a simple correct-answer percentage.
By considering both accuracy and question difficulty, it better reflects a student’s current level of understanding on an adaptive learning platform.
Why a Student Score cannot be 100
A Student Score represents the likelihood that a student will answer an average-difficulty question correctly.
Because there is always some uncertainty in predicting future performance, a Student Score can never reach 100. We can never guarantee that a student will answer a question correctly every time.