A teacher at a private school has been stood down amid serious allegations involving a student.

The Parklands Christian College in Park Ridge, about 40 min south of Brisbane, confirmed the staff member’s suspension in a letter sent to parents and caregivers on July 24, following concerns raised by the family of the student.

The private co-educational school, which caters to students from Prep to Year 12, confirmed the suspension in a letter sent to parents and caregivers on July 24.

Know the news with the 7NEWS app: Download today

The alleged incident is believed to have taken place around Easter.

7NEWS has obtained a copy of the letter, in which principal Gary Cully addresses the situation and assures the school community an external investigation is underway.

Queensland police confirmed detectives from the Logan District Child Protection and Investigation Unit (CPIU) have launched an investigation after receiving a report involving a teacher at a Park Ridge school.

Cully has urged families to remain calm and avoid speculation while authorities carry out their inquiries.

“I’m writing to inform you that a staff member has been stood down in response to a concern raised by a family in our parent and carer community,” Cully wrote.

“An external investigation is now underway, and the College is cooperating fully with the relevant authorities.”

He added there is “no current risk to students” and the school is remaining operational with “all appropriate safeguards in place.”

“As a father with a child at this school, and as your principal, I am deeply saddened that an investigation of this nature is taking place at Parklands.”

The principal urged families not to speculate or discuss the matter on social media, citing the sensitivity of the investigation.

“These situations are sensitive and complex, and it is important that we respond with wisdom, grace, and discretion,” the statement reads.

“We are caring for our community in every way we can, and keeping parents informed as much as possible,” Cully told www.20304050.best.

“We take matters of this nature extremely seriously.”

The teacher has not been charged at this stage.