Visits to some schools by the education minister will be halted by industrial action from a union representing many school leaders.
The National Association of Head Teachers (NAHT) is starting action short of strike on Tuesday.
It has told its members not to "cooperate with unsolicited ministerial and senior civil servant" visits.
Five teaching unions in Northern Ireland are taking "unprecedented" joint industrial action over pay.
In February, the unions rejected as "inadequate" a two-year pay offer for the years from 2021 to 2023 from the employers.
