CBSE Class 10, 12 Board Exams 2021: Latest updates students must know CBSE Class 10, 12 Board Exams 2021: Latest updates students must know CBSE said that if a school fails to update data on the OASIS portal then ânecessary actionâ will be taken as per examination by-laws. Share Updated: Apr 6, 2021, 10:11 AM IST As lakhs of students across India are preparing to appear in CBSE Class 10, 12 Board Exams 2021, the Central Board of Secondary Education (CBSE) on April 3 released a statement saying that Post Graduate Teachers (PGTs) and Trained Graduate Teachers (TGTs) have been assigned lower classes and this has resulted in dearth of qualified teachers for evaluation of practicals and assessment of CBSE Class 10, 12 Board Exams 2021 students.