School buses for second level students are returning to 100 per cent capacity.
Bus Éireann says other measures to prevent the spread of the virus will remain, including pre-assigned seating and mask-wearing.
School transport for post-primary level has been operating at 50% capacity since last year in an effort to stop the spread of COVID-19.
Bus Éireann says the Department of Education has kept this position under review, as the vaccination programme for post-primary age children was rolled out and as the restrictions were lifted on public transport.
Bus Éireann says plans began following the October mid-term break to resume operating at 100% capacity on secondary school buses.
But it says all other measures relating to hygiene, pre-assigned seating, cleaning and the wearing of masks by post-primary students will remain in place subject to further review.
Bus Éireann says its school transport offices around the country have been liaising directly with parents about any revised arrangements.