Well done to Aine & Laura @LadiesDmoyne Katie @OneillShamrock & Grace @BlayneyFaughs who represented our school at the @QueensGAA Future Stars trials this week#GAA#OLSS

We wish all of our Transition Year students the very best of luck as they receive their Junior Cycle results this Wednesday October 7th. We hope your results reflect the hard work, commitment and determination you showed throughout Junior Cycle# JuniorCycleResults2026##OLSS

Best of luck to TY student Maisie Flanagan who proudly represents Team Ireland in the European U17 Championships. Maisie is in action on Monday, when she takes on England's Delilah Lambert in a Last 16 contest#ProudSchool#OLSS

We are delighted to introduce our Student Council for the 2026–2027 school year. We wish all members of the Student Council every success in their roles and thank them for putting themselves forward to represent their fellow students#StudentCouncil2026#OLSS

Today on Mercy Day we remember the immense contribution of the Sisters of Mercy to the people of Castleblayney & surrounding areas. Our school has inherited not only their land & buildings but also their extremely rich traditions & values @ceist1 @clogherdiocese @mucknoparish

Congratulations to Darragh Wynne, Matt McNally, Rachel Duffy & Bartek Garnisiewicz, who each achieved the maximum 625 CAO points and to Liam Mc Mahon & Aimee Tyndall (absent from photo), who achieved a Distinction in the Leaving Certificate Applied programme# LC2026#OLSS

Congratulations to our Leaving Certificate Class of 2026 on their excellent results today, with fantastic achievements across all levels and subjects. It was great to see so many students call into school today. #LC2026#OLSS

Best of luck to all our Leaving Certificate students receiving their results on Friday. We are incredibly proud of your hard work and achievements. Celebrate safely, and best wishes for the next chapter#LC2026#OLSS

Kingspan Insulation Castleblayney will be hosting an onsite Open Evening on Monday, 29th June from 6:00pm to 7:30pm. Students, parents, and anyone interested are invited to visit their site, meet their team, and learn more about the apprenticeship pathways available#OLSS

Best of luck to 3rd Year student Maisie Flanagan who represents the Ireland U17 Boxing team in the Four Nations competition today#proudschool#hardworkpaysoff#OLSS

Best of luck to our pupils, past pupils, staff members and everyone involved with @monaghangaa football & hurling teams this weekend 👏🏻👏🏻

Need school uniform items or have some to pass on? Join us on Saturday 27 June 2026,10am–2pm in the Concert Hall. Jumpers, shirts, trousers, skirts, PE gear, jackets & more available. Free of charge(donations to charity welcome)#SchoolUniformSwap #Sustainability#OLSS

Well done to TY student Shane Malone who recently competed in the national finals of the Microsoft Office programme @CertMatters at Microsoft Dreamspace in Dublin#TY2026#MOS#OLSS

Best of luck to our pupils, past pupils, staff members and everyone involved with @monaghangaa @Monaghan_LGFA & @MonaghanCamogie teams this weekend 👏🏻👏🏻

Well done to our 1st Year Boys GAA team who won today's @monaghangaa blitz #OLSSGAA

Well done to Maeve, Eimear & Áine on their success in the Ulster Athletics yesterday- Áine 2nd in the steeplechase, Maeve 2nd in the shot putt & 3rd in the 400m and Eimear 4th in the 80m hurdles#Athletics#OLSS

Congratulations to our pupils, past pupils & everyone involved with @MonaghanCamogie on their success in the Ulster final yesterday 🏆🏆👏🏻👏🏻#hardworkpaysoff#Camogie#OLSS