The Teachers Service Commission (TSC) has directed that all tutors in public and private schools must be registered with the commission.
TSC chief executive Nancy Macharia said no teacher who has been deregistered should engage in teaching or conduct training in co-curricular activities in schools.
Mrs Macharia has since ordered all teachers' details, including their TSC numbers and teaching subjects, be displayed at all times in principals' offices and staffrooms.
"Compliance with registration requirements for private schools should be continuously monitored through physical checks, twice every school term," said Mrs Macharia in a February 5 circular to TSC county directors
She warned that details of schools that have not complied with the directive should be forwarded by the county directors to TSC's head of quality assurance and standards after every monitoring activity.
Under article 237(2) (a) of the Constitution, TSC is mandated to register trained teachers. Further, section 23 (2) provides that no person shall engage in the teaching service unless such a person is registered as a teacher.
Meanwhile, Nakuru has the highest number of teachers who want promotion at 401 followed by Kitui and Kibwezi with 383 respectively.
A total of 12,080 teachers have submitted their details to Kenya National Union of Teachers (Knut) asking TSC to promote them because they have attained higher academic qualifications.
Knut data shows that 257 teachers have acquired master's degrees, 6,370 bachelor's degrees and 5,453 diplomas and they have all sought promotions.
Knut and TSC are currently engaged in a battle over promotion of teachers who have attained higher qualifications.