How Adaptation Works

The details of how quizzes adjust difficulty

Checkfu’s adaptive algorithm picks questions based on how the student is doing. Here’s how it works.

Difficulty Levels

Questions are rated 1-5:

Level	What It Means
1	Basic recall, simple problems
2	Easy application
3	Grade-level standard
4	Challenging
5	Advanced/extension

How Difficulty Changes

After a correct answer:

• Difficulty goes up by 1
• Multiple correct answers in a row speeds this up

After a wrong answer:

• Difficulty goes down by 1
• Gives the student an easier question to rebuild confidence

Starting point: Most quizzes start at level 3 (medium).

Mastery Detection

A student achieves mastery when they:

• Get several questions right at high difficulty (4-5)
• Show consistent performance
• Demonstrate understanding across different questions

The exact threshold is configurable in quiz settings.

Gap Identification

As students answer questions:

1. The system tracks performance by concept
2. Concepts with low accuracy are flagged as gaps
3. You can see which skills need more work
4. Students get recommendations for what to practice

Quiz Settings

Session Settings

Setting	What It Does
Max questions	Stop the quiz after this many questions
Target score	Score that counts as “passing”
Mastery threshold	How many correct in a row for mastery

Retake Settings

Setting	What It Does
Max retakes	How many times a student can retry
Improvement threshold	Minimum improvement to allow another retake

What You Can See

As a Teacher

• Class performance overview
• Common misconceptions
• How difficulty progressed for each student
• Time spent per question

What Students See

After each quiz:

• Score and mastery status
• Concepts mastered vs. needs practice
• What to study next
• How they compared to previous attempts