Principal Trevor Robinson said the statistics were “genuine hard objective evidence” of the success of the Dickson Plan.
Based on A-Level results Lurgan College is ranked 14th out of the country’s 68 grammar schools, finishing above Armagh Royal, Banbridge Academy, Portadown College, Methody, RBAI and Campbell College.
86.7% of pupils at the College Walk school achieved three or more A-Levels at grades A* to C.
Lurgan’s other grammar school, St Michael’s, was ranked 58th after only 65.4% of students got three or more A-Levels.
Mr Robinson commented: “The headmaster, governors and staff of Lurgan College are absolutely delighted with the continuing outstanding performances of their pupils at both A-Level and GCSE.
“If anyone is looking for genuine hard objective evidence of the success of the Dickson Plan, this is it.
“Other hard evidence can be found in the school’s very good 2013 inspection report and in pupils’ successes outside the classroom (for example Irish Hockey Champions and Ulster Schools’ Trophy winners in rugby).”
He continued: “The size of the school, its excellent programme of pastoral care and its 14 to 19 atmosphere, complemented by its strong Christian ethos, are outstanding key components of this success.
“I congratulate the pupils, the parents and the hardworking and dedicated teaching staff on these outstanding performances which result from the school working in close harmony with the wishes, aspirations and support of its local community’.
The results achieved by every NI grammar and secondary school in last summer’s GCSE and A-Level exams were released by the Department of Education in response to a Freedom of Information request.