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New users please read this section:


New users start by downloading the free "Mini" version of Lertap. This is done via this webpage. There's a version for Windows users, and another for those using a Macintosh computer.


The free Mini version will meet the needs of quite a number of users. It includes all of Lertap5's features and options, and allows for any number of test or survey items to be processed -- its limitation is that it will not process more than 250 data records. A license is only necessary when users want to process more than 250 records. Note: as of April 2021, 4-month limited-term licenses became free for many users.


A license may be requested by using this page.


Useful links for current users:


Special assistance on the application and interpretation of Lertap5 is available here.



Links to selected Lertap resources are listed below.



The main Lertap website. Extensive information about Lertap5 with a variety of links to related resources, such as sample datasets, support documents (including the manual), references, testimonials, exercises for test and measurement classes, and some boring videos.


The Lertap help site. A supplement to the manual and a primary resource for users.


The "EULA", end-user license agreement for Lertap5.


The QUIA website, a developmental and experimental site. Has a variety of tidbits and, at times, special resources for instructors.


Assessment Systems Corporation, makers of an excellent item response theory program: "Xcalibre". Xcalibre is our personal favorite when it comes to IRT. Lertap interfaces with Xcalibre easily. Click here to read more about Lertap and IRT.


Please direct questions or comments to: lertap5@gmail.com

Last update: 25 April 2021