서울교육청은 올해부터 자율형 사립고가 사회통합전형 미달 인원을 충원할 수 없도록 제도가 바뀐 점과 자사고였던 대성고가 일반고로 전환돼 290명이 증원된 점이 영향을 미쳤을 것으로 분석했다.
The Seoul Metropolitan Office of Education analyzed that the fact that there was a change in the system to prevent autonomous private high schools from filling the insufficient number of students in a social integration class and the fact that Daesung High School which used to be an autonomous private high school turned into a regular high school and gained 290 more students perhaps have affected it.