IdiomIQ Adaptive Placement Test

IdiomIQ Adaptive Placement Test delivers a personalised English placement test that dynamically adjusts to each student’s ability level. Rather than presenting every question in a fixed order, the algorithm selects the next question based on the student’s previous answers, reaching an accurate CEFR estimate with far fewer questions than a traditional fixed-length test.

How it works

• Each question is answered by the student.
• A Bayesian EAP estimator continuously refines the ability estimate (theta) and its standard error.
• The quiz stops automatically once the standard error falls below your configured target confidence, or after the maximum number of question batches.
• The estimated CEFR level (A2 through C2) is displayed on a results screen and emailed to the student.

Key features

• Adaptive algorithm: Bayesian EAP with Item Response Theory (IRT) 3PL model
• CEFR levels: A2, B1, B2, C1, C2
• Question banks: unlimited banks and questions per bank
• CSV import: bulk upload questions with level, stem, and four answer options
• Email results: configurable student and admin notification emails
• Attempt log: searchable, sortable log with CSV export
• Dyslexia-friendly font toggle (OpenDyslexic, SIL OFL 1.1)
• GDPR follow-up consent checkbox
• Honeypot spam protection
• Rate limiting to prevent abuse
• Configurable log retention with daily automated cleanup
• Fully built on the WordPress Settings API — no custom admin framework

Shortcode

Place the test on any page or post:

[iiqapt]

To use a specific question bank:

[iiqapt bank="2"]

Source code

Development takes place on GitHub.

Privacy Policy

This plugin collects and stores personal data as described below. All data is held in your site’s own database. The free plugin does not transmit personal data to any third party.

Data collected per test attempt

• Student email address — entered voluntarily before the test begins; used to deliver results by email and stored in the attempt log.
• Test outcome: CEFR level, ability estimate (theta), standard error, and test duration — stored alongside the email to allow administrators to review attempt history.
• Date and time of the attempt.

Storage location: The {prefix}adaptive_attempt_logs database table on your own server.

Retention period: Configurable under Settings → IdiomIQ Adaptive Placement Test → General Settings → Log Retention. The default is 90 days; a daily scheduled event automatically removes records older than this threshold. Administrators can also delete individual records or the entire log from the Attempt Logs admin tab.

Data deletion on uninstall: If Delete data on uninstall is enabled in General Settings, all plugin database tables and stored options are permanently removed when the plugin is uninstalled via the WordPress admin.

Rate limiting

To prevent automated abuse, a hashed representation of the visitor’s IP address (MD5 hash — the raw address is not stored) is written to a WordPress transient at the start and submission of each test attempt. These transients expire automatically after one hour and are not retained as long-term records.

Recommended site owner disclosure

Site owners should include the following information in their own Privacy Policy:

“When you take the English level test, we collect your email address and store your result (CEFR level and score) in our database. This information is used to send you your results and to allow our team to review outcomes. Records are automatically deleted after [your configured retention period] days. Your IP address is temporarily hashed and stored for up to one hour for abuse-prevention purposes only.”