Considerations

 

Since we focus on schools in Sri Lanka to make school time table we have to consider some constraints. This system is a combination of both hard constraints and soft constraints. Those are,

Hard constraints

•    At any period, each subject can be taught by only one teacher.
•    At any period, a teacher can teach at most one subject

 

Soft constraints

•   If teacher taking 2 classes of same subject to be scheduled in consecutive periods.
•  A group of teachers can’t be attend to only one class.

 

Other areas that we should consider are,

• The time table should create in order to cover the syllabus
• No of teachers available in the school
• No of subjects in school
• No of classes in school
• No of periods to cover within a week for a subject
• Maximum no of periods a teacher can conduct
• First period is allocate for the class teacher
• The time duration for a period is 40 minutes
• For grade 6 to 11, Main subjects like math, science, English, and Sinhala periods are available in every day and other subjects are allocate as two periods per week
• When it comes to teachers time table we have to consider about
• last year class
• teachers experiences
• teachers interest
•    In O/L classes teacher should teach at least 33 periods per week and In A/L classes 31 periods per week
•  Every class should have a library period for their reading purposes.
• An ICT period is allocated to grade 6, 7, 8, 9 classes for a week
• 3 periods are allocated for a basket subjects per a week, as
• one double period
• single period
•  There should be only one double period for a particular day for grade 6 to  11 classes