Feature-packed is Lertap 5. Have a browse of the topics listed below to get an idea of some of its features and capabilities.


It's easy to use

Heaps of documentation

Simple but really powerful control language

Graphs? (we got 'em, even with a gestalt capability)

Context-sensitive help

Sample datasets? You bet!

Certification and licensing is here

Looking for group differences (DIF+)

Cheating detection

Comprehensive item flags

Advanced stuff