A cef file extension is related to the Class Action Gradebook Elementary Edition data file format.
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.CEF file extension - Class Action Gradebook Elementary Edition data
What is cef file? How to open cef files?
File type specification:
The cef file extension is associated with Class Action Gradebook, an utility for Microsoft Windows that allows users to manage and organizing data about classes and students.
The cef file stores various data used for internal purposes of the Class Action Gradebook.
The default software associated to open cef file:
Class Action Gradebook 
(obsolete software)
Company or developer:
CalEd Software
Class Action Gradebook is designed for teachers who teach multiple subjects to a single group of students. For easy access, your class will have a tab for each subject you teach. Subjects can be organized into assignment categories, such as classwork, participation, and tests, and grades can be calculated on a weighted or unweighted basis.
List of recommended software applications associated to the .cef file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cef file, edit cef file, convert cef file, view cef file, play cef file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with cef file - Class Action Gradebook Elementary Edition data
Click on the software link for more information about Class Action Gradebook. Class Action Gradebook uses cef file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
Microsoft Windows:
Class Action Gradebook (obsolete/discontinued)
