In a letter sent to parents, the school confirmed that a Year 11 pupil tested positive for Covid-19.
The pupil has not been in the Storrs Hill Road school since Friday, September 18.
Principle Mrs Samantha Broome said: "Within the last 24-hours the Academy has been notified that a pupil in Year 11 has tested positive for Covid-19.
"The pupil hasn’t been in the Academy since Friday September 18.
"In line with guidance and our planned response, the Academy has sought advice from Public Health/Health Protection Team and implemented all necessary measures.
"Pupils and staff who have been directly impacted have been notified of the specific actions that they need to take.
"It is important to note that if the Academy has not made direct contact with you there is no further action for you that is necessary in relation to this case, and your child is expected to attend the Academy as normal.
"The Academy continues to operate in line with its published risk assessment that is available on the Academy website."
What is a 'bubble'?
The government has advised schools to separate pupils into bubbles to reduce contact and limit the transmission of coronavirus.
In secondary schools, the government advice is to separate the bubbles into year groups in order to "enable schools to deliver the full range of curriculum subjects and students to receive specialist teaching."
This means there is no mixing between the year groups in classrooms, corridors and other open areas.
It also allows schools to easily identify those who may need to self-isolate if someone within the bubble tests positive for the virus
This means if a pupil tests positive in one bubble, only that bubble will need to isolate and not the other bubbles, limiting the impact on each year group.