What is CBSE's On-Screen Marking (OSM) System for Class 12, and How Does It Compare with Global Practices?

The Central Board of Secondary Education (CBSE) has moved Class 12 answer-script evaluation to a fully digital On-Screen Marking (OSM) system this year. Under OSM, students continue to write their exams in normal paper answer booklets, but the checking process changes. After the exam, the answer books are scanned, uploaded to a secure online platform, made anonymous (the student's identity is hidden), and then sent electronically to teachers who mark them on a computer screen instead of handling physical scripts. The change attracted attention after some students reported problems during the process, such as blurred scans, missing pages, and, in a few cases, being shown another candidate's script.

The idea is not entirely new. CBSE first looked at OSM in 2014 but dropped it then because the scanning technology of the time was not good enough—answer books often had to be cut from the spine before scanning, which created a risk of pages getting mixed up. The Board says the goal of OSM is to make evaluation more uniform, efficient, and secure: it expects digital marking to reduce regional differences in how strictly teachers mark, cut down clerical errors in adding up marks, and allow better monitoring of evaluators. Before rolling it out, CBSE ran a trial involving teachers from Kendriya Vidyalayas, Navodaya Vidyalayas, state government schools, and private schools.

Digital evaluation has been used abroad for years, which is useful context for aspirants. Major examination boards in the United Kingdom—such as AQA, OCR, and Pearson Edexcel, which run exams like the A-levels—scan scripts centrally and send them to examiners online. In some cases an examiner does not mark a whole answer book but evaluates one specific question across thousands of scripts, which can improve consistency. The UK regulator Ofqual says online marking was introduced mainly to improve quality control, raise efficiency, and strengthen the monitoring of examiners. Ofqual has also said that even where artificial intelligence is used, human examiners must remain responsible for the final decision. The International Baccalaureate (IB), whose exams are taken in more than 150 countries, similarly uses digital evaluation, with senior examiners checking marking quality through moderation exercises.

Research on long-running online-marking systems generally points to more consistent results. A study commissioned by Britain's exam regulator found that markers using online systems applied mark schemes more consistently than those using paper. At the same time, researchers note that digital marking changes the type of errors rather than removing them—problems with scan quality, software, or rollout can still affect outcomes. Indian educators have raised related concerns: that students' handwriting over a three-hour paper may not always scan clearly, that subjects with diagrams or pencil work (such as Geography, Biology, Physics, and Mathematics) may not reproduce well, and that schools with better infrastructure could gain an advantage over those without it. Some also stress that group discussion among teachers at evaluation centres has educational value that a purely speed-focused system might lose.

For an aspirant, the key point to remember is the principle that runs through both the Indian and global debate: technology is meant to assist human markers and improve standardisation and monitoring, not to replace the professional judgement of teachers. CBSE introduced OSM to make evaluation faster, fairer, and more secure; experts abroad broadly accept the concept but stress that careful piloting, teacher consultation, and human oversight decide whether such a system works well in practice. OSM is therefore a useful current-affairs example of how education technology and assessment reform are being applied in India.