The entry criteria for Notre Dame High School will change from the beginning of the new school term in August 2021 and admit boys for the first time, but only to S1 that year.
The decision - with unanimous support from all parties - was taken today at the City Administration Committee and follows a public consultation launched in February this year.
Three options were consulted on:
The full consultation report can be accessed here.
The report by education officers recommended to proceed with option three and that the school becomes co-educational in August 2021.
The committee report includes a report by Education Scotland and is available here.
Maureen McKenna, Executive Director of Education, Glasgow City Council said today: "There has been much debate on the changes to the entry criteria for Notre Dame High School with strong arguments being put forward - both during the pre-engagement and the consultation process.
"Now that the decision has been made by elected members, education officers will start to develop transition plans and will engage with school and parent representatives from all the associated primary schools and secondary schools affected by changes.
"There's not only the physical aspects that need to be considered but we also need to be sensitive and recognise that this represents a significant change for the school and local community.
"I am confident that Notre Dame High School will continue to provide an excellent education to the young people of Glasgow and their families."