The 1916 Proclamation has been read out by students at around 4,000 schools around the country as the Tricolour was raised.
It was part of Proclamation Day - which saw every educational institute mark the significance of the Proclamation.
Students celebrate Proclamation Day at Gardiner Street Primary School in Dublin | Image: Shane O'Neill Photography
Normal school schedules were replaced with special ceremonies to mark the significance of the document in this 1916 centenary year.
Students celebrate Proclamation Day at Gardiner Street Primary School in Dublin | Image: Shane O'Neill Photography
The Proclamation of the Republic, also known as the 1916 Proclamation or Easter Proclamation, was a document issued by the Irish Volunteers and Irish Citizen Army during the Easter Rising.
It states: "We declare the right of the people of Ireland to the ownership of Ireland and to the unfettered control of Irish destinies, to be sovereign and indefeasible".
Students celebrate Proclamation Day with Transport Minister Paschal Donohoe at Gardiner Street Primary School in Dublin | Image: Shane O'Neill Photography
Following the raising of the Irish flag, the Proclamation was read by a student, past pupil or special guest of each school or institution.
This was followed by a sharing of each school's 'Proclamation for a New Generation' - which set out the vision and ideals of the generation of 2016.
Slua bhreá ar maidin is muid ag léamh an Forógra agus an bhrat á chuir in airde. #Ireland2016 #ProclamationDay pic.twitter.com/bYAE48o175
— Scoil Lorcáin (@ScoilLorcain) March 15, 2016
Students then presented a selection of music, theatre and poetry, either specially commissioned, to which family and friends were invited to attend.
Blue sky for the raising of the tricolour and singing the anthem on #ProclamationDay in Scoil Ide. pic.twitter.com/pFid3egcmG
— Scoil Ide Corbally (@ScoilIde) March 15, 2016
Meanwhile, the words of the Proclamation have gone around the globe with thanks to a project by Trinity College Dublin.
Ahead of Proclamation Day, the Irish Army visited schools to deliver the national flag to students.
Commandant Stephen MacEoin was among those visiting officers, and he spoke to Newstalk Breakfast earlier.