Kenya National Examination Exercise Chief Executive Officer Mercy Karogo said KNEC registration anomalies were detected during a validation exercise.
Registration had started on January 2, before KNEC asked parents, teachers and candidates to verify their details between February 16 and 22.
The parents and candidates were advised to send the candidates’ index numbers to 20076.
“In case of any anomaly please contact the head teacher or principal immediately before February 22,” KNEC advised.
But it emerged that most parents and candidates did not conduct the verification exercise.
“We have listed several cases where schools manipulated the birth registration data to register candidates,” said Dr Karogo.
She said the system was configured in such a way that registration digits must be entered for one to move to the next registration page.
“Some just entered zeros while others entered some funny digits. We detected all these and cancelled their registrations,” she said.
A birth certificate is one of the documents that must be available during registration.