The Christian Brothers first established a community in 1951, before opening the school in 1955. It is now under the Trusteeship of the Edmund Rice Schools Trust. The school added a single storey extension in 1969 and later added a sports hall in 1980. After some modernisation in 1995, the school opened a new wing in 1999. In the summer of 2010, a new technology room, drawing room, music room, a second computer room, two new class rooms and two new science laboratories were added to the building. On 10 May 2012, a new sports hall with a canteen and a new classroom was opened by the President of Ireland Michael D. Higgins. The school is served by Dublin Bus routes 7b, 7d, 46a, 46e, 47, 116, 118, 145 and 155 along the N11 Stillorgan Road Quality Bus Corridor. The school itself is located about 2 minutes walk to Stillorgan village.
Curriculum
The school offers the following subjects at Junior Cycle:
First Year: All students take the following subjects:
Core: Irish, English, Mathematics, History, Geography, Science, C.S.P.E, S.P.H.E, Religion, Business, Technical Graphics, Technology, P.E., French, German, Art. Modules: Music, Computer Studies, Aquatic Studies, and Speech and Drama. Second and Third Year: Core: Irish, English, Mathematics, History, Geography, Science, C.S.P.E., S.P.H.E., Religion, P.E. and A selection from: Business, Technical Graphics, Technology, French, German, Art, Music, Computer Studies, and Speech and Drama. The subjects at Senior Cycle are as follows: All students study Irish, English, Maths, French or German and Religion. The following are free for the students to choose from: History, Geography, Biology, Chemistry, Music, Business, Accounting, Economics, Art, Technology, Applied Maths, Physics, Home Economics, Design & Communication Graphics, PE, and Career Guidance. The school operates a Transition Year Option in Fourth Year. Oatlands College does not offer a Repeat Leaving Certificate Programme.
Sports
Oatlands partakes in Gaelic football, hurling, soccer, basketball, chess,cross country running,archery and athletics. The school has also a very successful golf team who became the South Dublin champions in 2013. The U16 Hurling team reached two 'A' County finals last year. They played in the 'C' final this year and narrowly lost out to Clonkeen College. In 2017, the senior rugby team won the South Dublin Cup winning with a last minute penalty. In 2018, the junior rugby team won the South Dublin Cup with the seniors narrowly losing out to Benildus College.
Extra-curricular activities
School teams enter Business Quiz Competitions, Inter-School Debate Competitions, Student Enterprise Awards, the Young Scientist and Technology Exhibition, Young Social Innovators, Build a Bank, and Edmund Rice Awards. Students also participate in Schools Across Borders, and the Zambia Immersion Programme. Each year a College Musical is performed by Transition Year students in association with the girls from Dominican College Sion Hill. Talent Shows are held on a regular basis. There is an annual School Tour in Transition Year to a continental destination. Students regularly participate in cultural and educational outings. Transition Year students may complete the ECDL Computer Course and Oatlands College is a recognised accrediting centre. A school newsletter `Oatlands News` is currently published twice a year.