Why teachers have exams in all subjects on the same day?

Teachers don't typically schedule exams in *all* subjects on the same day. That would be incredibly unfair and impractical. Students would be overwhelmed, and it wouldn't accurately assess their understanding of the material.

Exams are usually scheduled strategically, often spread out over several days or even a week, to allow students adequate time to prepare and demonstrate their knowledge in each subject without the pressure of multiple exams in one day. The scheduling depends on the school's policies and the individual teachers' preferences, but the goal is always to create a fair and manageable assessment period for students.