Find the most common Dersiva questions in one place.

Dersiva is a school timetabling system that evaluates teachers, lessons, classes, time structures and school constraints together. Its goal is not only to complete a timetable, but to create a more balanced, fair and practical one.

Dersiva can generate timetables automatically, while school administrators define rules, teacher preferences, unavailable days, daily limits and other conditions. A solver result does not become the official school timetable without administrative review and approval.

A significant part of desktop planning can operate locally. License or user verification, online publishing and the Teacher Portal may require internet access and connectivity to Dersiva API services.

Dersiva aims to evaluate timetable quality as well as feasibility, including teacher gaps, daily intensity, short days, lesson distribution, student load, teacher-specific limits and school-wide fairness.

Yes. Different daily maximum lesson limits can be defined for individual teachers, so one teacher may have a six-lesson daily limit while another has a different limit.

Yes. Unavailable days and working preferences can be defined per teacher and considered during timetable generation.

Dersiva can treat block lessons and weekly distribution patterns as planning rules. A pattern such as 2+2+1 across the week can be part of the scheduling objective.

Unplaced lessons usually result from a combination of teacher capacity, unavailable days, class time windows or conflicting constraints. The first step is to identify which data or constraint layer is creating the bottleneck.

No. Two timetables may both place every lesson while differing substantially in teacher gaps, overloaded days, short days, lesson distribution or school-wide fairness.

Dersiva can treat unnecessary gaps during the school day as a quality objective. The aim is to improve compactness without unnecessarily damaging the schedules of other teachers.

Lesson weight, suitable time periods and daily distribution can be part of timetable quality, allowing the planning approach to consider student learning load as well as teacher working patterns.

Yes. Trials can be reviewed using gaps, intensity, short days, lesson distribution and other quality indicators before administrators select the applied timetable.

Dersiva can use an automatic approach that considers teaching intensity and teacher capacity. If administrators assign the duty day directly, the timetable can also respect that decision.

Yes. Duty-exempt teachers can be kept outside the automatic duty pool, and manual duty assignment can also be prevented for those teachers.

Yes. Once duty day and location are confirmed and published, they can be displayed to the teacher in the Teacher Portal.

The Teacher Portal lets each teacher view the applied timetable published by the school, including their own weekly lessons and duty information, through the web or a mobile device.

Trial timetables are intended not to change the official portal timetable. The portal uses the timetable explicitly selected and published by school administration as the applied timetable.

Teachers sign in with the username and password created by the school. Account security remains a responsibility of both the teacher and school administration.

The current desktop package targets 64-bit Windows 10 and Windows 11. The current system requirements on the Download page should be checked before installation.

Review the runtime environment, required native components, Visual C++ runtime, OR-Tools compatibility and safe diagnostic mode. It is important to separate data/constraint problems from runtime-environment problems.

A school network or security policy may block access to Dersiva domains or API services. Internet connectivity, DNS/domain access and API connectivity should be checked together.

A portable full backup can be used to move supported school data to another computer. The correct backup file should be selected carefully and existing data should be protected before restore.

.ddbackup is Dersiva’s portable full-backup format, used to back up supported school data and program state and move it to another installation.

No. A significant part of desktop data may remain local. Online services should receive only the data required by the relevant online feature; the Teacher Portal uses the timetable data that is explicitly published.