Choosing a secondary school is a significant decision for any family, and we understand you want to find the best fit for your child's future. On this page you will find all information relevant to making an application for First Year 2026/2027.
Common Application System (CAS)
Castletroy College is part of the Limerick Area Post - Primary Schools Common Application System. The Common Application System (CAS) is the system that manages the application of students to the seventeen participating schools in the Limerick area. This system is carried out in conjunction with the Limerick Education Support Centre (LESC). The aim of CAS is to “assist and support the parents/guardians of children seeking a place in 1st Year in one of the 17 CAS post - primary schools in Limerick City and environs.”
Admissions Process for September 2026
Parents / Guardians of students seeking to apply are kindly asked to use the online CAS portal, linked below. You will be required to input information about your child as well as information related to current schools of siblings if applicable. Applicants must rank their list of preferred schools from 1 to 11. This is a requirement under the Common Application System.
Please note:
- Parents/Guardians can make edits to their application up until the deadline.
- The application process is managed by the Limerick Education Support Centre.
- If your child does not receive their school of 1st choice, the application form will be shared with schools 2 - 11, as required, in the order of preference.
- If you have any questions, please contact the school directly.
The CAS portal will go live from October 1st 2025. Completed applications must be submitted no later than 5pm on Monday January 12th 2026.
Applications to First Year made after the closing date of 5pm on Monday January 12th 2026 should be made as a transfer application using the schools transfer application form.

Support Video: How to Complete Your Application
Key Dates
|
From Wednesday 1st October 2025 (9am) |
The Admissions Portal will be live and Application Forms will be accepted by schools |
Monday 12th January 2026 (5pm) |
Closing date for the submission of applications forms |
Tuesday 27th January 2026 |
Post-primary schools will post offers of places |
Wednesday 28th January 2026 |
Post-primary schools will post letters of refusal |
Wednesday 4th February 2026 (12.30pm) |
Date by which offers must be accepted/refused |
Tuesday 24th February 2026 |
Common Registration Night at all participating post - primary schools |
As an Limerick and Clare Education and Training Board school we are committed to ensuring that every parent and guardian can access and complete the application process with confidence. Our team is here to support you at every stage of the application. We can be reached by telephone at 061 330785 or by email at admin@castletroycollege.ie.
Before You Start Checklist
Our Admissions Policy
Our Admissions Notice
Special Class: Applications to our special class are not processed through the above CAS system. For application details and information about our special class please click the button below.
Apply to Our Special Class