The fiasco over the Class 12 CBSE board results following irregularities in digital evaluation that evoked strong reactions from students, parents and teachers across the country, eventually led to rolling of heads and fixing accountability. In a major shake-up at the Central Board of Secondary Education (CBSE), the government has shifted board Chairman, Rahul Singh and Secretary, Himanshu Gupta and ordered a probe into the alleged irregularities in the digital evaluation system for the class 12 examination process.