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The Class 12 Board examination results, released by the CBSE on May 13, revealed a significant impact this time around due to the implementation of On-Screen Marking (OSM) and a stringent step-marking system. Approximately 9.8 million answer sheets underwent digital evaluation—a process the Board has described as both transparent and error-free—yet this new system appears to have disproportionately affected students in the Science stream. Many high-achieving students, despite performing well in the JEE Main examination, failed to secure the requisite 75 percent marks in their Board exams; this has now jeopardized their prospects for admission into premier institutions such as IITs, NITs, and IIITs.

**Fewer Students Secure Full Marks in Science Subjects**

This year, a substantial decline was recorded in the number of students securing a perfect score of 100 marks in core Science subjects such as Mathematics, Physics, and Chemistry. Only 1,283 students in Mathematics, 1,061 in Chemistry, and a mere 96 students in Physics managed to achieve full marks. In stark contrast, thousands of students secured perfect scores in subjects such as Painting, Psychology, and Artificial Intelligence.

**What are OSM and the Step-Marking System?**

Under the On-Screen Marking (OSM) system, answer sheets are scanned and evaluated directly on computer screens. Examiners are required to award marks strictly in accordance with the CBSE's digital answer scheme and the prescribed steps. Consequently, even if a student arrives at the correct final answer, full marks are withheld if the method or presentation of the solution deviates from the stipulated scheme.

**Why Were Science Students Disadvantaged?**

According to experts, significant emphasis was placed on the procedural steps and methodology used to solve problems in Science subjects. Many students, despite arriving at the correct final solution, failed to adhere to the prescribed format, resulting in a deduction of marks. Furthermore, the digital evaluation environment places examiners under increased pressure to avoid marking errors, potentially leading to stricter adherence to the marking scheme.

**The Impact of Coaching Centers and 'Dummy Schools'**

Students preparing for competitive entrance examinations like JEE and NEET typically devote the majority of their time to conceptual learning and MCQ-based studies. Consequently, their proficiency in the art of writing detailed, descriptive answers—a skill crucial for Board examinations—often diminishes. This decline in writing practice is subsequently reflected in their performance during the Board exams. 

Revaluation Process to Begin on May 18
Students who are not satisfied with their marks will be able to apply online for rechecking and revaluation starting May 18. Facilities such as mark verification, downloading of scanned copies, and re-examination of selected questions will be available.

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