Tá seiplíneach lánainseartha ag an Choláiste ö An tAthair Dónal de Róiste. Ní ghlacann an tAth. Dónal ranganna ar maidin ach bíonn sé i gcónaí ar fáil do scolairí (creideamh ar bith) atá ag iarraidh dul chun cainte leis. Glacann an tAth. Dónal páirt sna ranganna tráthnóna agus oíche agus bíonn sé i gcónaí thart mar chara don duine atá i dtrioblóid nó a bhfuil fadhbanna acu. Is comhairleoir cáilithe é a bhfuil lán taithí aige ag deighleáil le daoine óga. Cuirtear Aifreann ar fáil gach maidin Domhnach. Bítear ag súil go mbeidh gach scoláire i láthair don Aifreann. Ní mór an Coláiste a chur ar an eolas roimh ré má tá cead ó thuismitheoirí ag scoláirí gan freastal ar an Aifreann. Ócáid soisialta ar go leor dóigheanna is é an tAifreann dúinn in Árainn Mhór agus is teacht le chéile deas dúinn é ag deireadh gach seachtaine. Faoi láthair níl aon ionad eaglasta ar an oileán do dhaoine ó chreidimh taobh amuigh den Eaglais Chaitliceach. Ach le treoir tuismitheoirí, déanfaidh an Coláiste gach iarracht freastal ar riachtanais scoláirí nach Caitlicigh iad.

Tá dochtúir agus altra lánaimseartha ar an oileán. Tá ionad sláinte ar an oileán fosta inar féidir le scoláirí cabhair leighis proifisiúnta a fháil gach lá. In am na héigeandála, má tá fíor thinneas ar aon duine, tá bád tarrthála ag an oileán a thógfadh duine go dtí an tír mór taobh istigh de thrí bhomaite. Is é gnó an tuismitheora / caomhnóra billí leighis a íoc. Ba chóir do thuismitheoirí / caomhnóirí aon fhadhb leighis (plúchadh, fliuchadh leaba, etc.) atá ag scoláire a chur in iúl don choláiste roimh ré.

The Coláiste has a full-time chaplain, An tAthair Dónal de Róiste. Athair Dónal does not take classes in the morning but is always available to students of any denomination, who wish to speak with him. Athair Dónal takes a full part in the afternoon and evening activities and is always available to those who are in trouble are who are experiencing problems of any sort. He is a professional counsellor who has extensive experience in dealing with young people. Mass is celebrated every Sunday morning and it is expected that all students will attend. Parents should inform the Coláiste beforehand if the student has permission to absent himself/herself from Mass. In many ways the Mass is a social event in Árainn Mhór where we can come together in a pleasant atmosphere at the end of the long week. At present there are no facilities on the island for people of faiths other than Roman Catholic. However, with parental advice, the Coláiste will endeavour to accommodate the needs of any student.

The island is serviced by a full time doctor and nurse. There is a health centre on the island where students can receive professional medical attention every day. In the case of serious emergencies the island is served with a lifeboat, which can take a patient to the mainland in less than three minutes. Medical bills are the responsibility of parents/guardians. Parents/guardians should advise the Coláiste authorities of any medical conditions (Asthma, Bed-wetting etc.) which students may suffer from.