The change means all classes must now be split, with combined groups such as third and fourth taught together.
A primary school in Kilmead has lost a mainstream classroom teacher after its enrolment fell just one pupil short of the Department of Education’s staffing threshold.
Scoil Íde Naofa had 160 pupils at the end of September 2024 – one below the 161 required to keep six teachers.
As a result, Principal Robert White was forced to cut a teacher, pushing average class sizes from 26 to almost 30.
The change means all classes must now be split, with combined groups such as third and fourth taught together.
Mr White told Kildare Today that the situation makes it difficult for teachers to plan lessons or give pupils individual attention.
He said the class sizes are not sustainable.

Friday's Kfm Obituary Announcements
New Cultural Programme Set For Castletown House
Celbridge Woman Who Lost Sister To CF Calls For People To Support Today's Fundraiser
Protestors, Including Kildare's John Dallon, Refused Entry From Government And Agriculture Bodies Meeting
Defence Forces Travelling To The Curragh Today For Training
Newbridge Silverware’s Silver-plated Cutlery Factory Officially Closes
Martin Heydon Will Meet Farming And Haulier Groups This Morning Amid Fuel Protests
Missing 17-Year-Old Joshua Treacy From Maynooth Has Been Located