Education CS George Magoha said marking started on Monday, and day one papers have already been marked.
“If we challenge ourselves, the results will come out within fourteen days,” Magoha said.
The pupils started with Mathematics, Composition, and English on Monday, Kiswahili Lugha, Insha and Science on Tuesday.
Magoha said marking started immediately after the first three papers were submitted.
He spoke while supervising the distribution of exams at Kamukunji Deputy County Commissioners Office.
He later visited Eastleigh Primary and Ansaaru Sunna Group of schools in Eastleigh.
Knec has also put in place programmes that will guide the assessment of oral exams, distribution of materials during exams and return of answer scripts.
This year the council registered 1,225,507 candidates in 28,316 KCPE examination centres as compared to 1,191,752 candidates in 28,467 centres in 2020.
This reflects an increase of 33,755 representing 2.75 per centre.