Around 1,750 Hibernia students are impacted, with 800 due to qualify in 2021 and around 950 in 2022.
Student teachers attend the course for a two-week block each year but, as they missed out due to Covid-19 restrictions last year, some will have to complete four weeks of the online Gaeltacht this summer, meaning they could be paying up to €1,300.
In a letter to students sent yesterday, Hibernia College founder and president Dr Sean Rowland said: "In early January, it was brought to our attention that the proposed fee for the two-week online programme would be in the region of €650 and that all students from State colleges would receive a re-instated student grant to cover this cost.