In a statement released to media, a Ballarat Grammar spokesperson said the log was being used in a hut building activity as part of the Year 6 camp near Beaufort.

The log was about 20cm in diameter and had fallen about 30cm before hitting the pupil on the head.

The student was able to walk from the site of the activity and did not lose consciousness but experienced some pain and dizziness, according to the statement.

An ambulance was called and an additional paramedic also attended.

An air ambulance was called to transfer the student directly to the Royal Children's Hospital for further assessment as a precaution due to the remote location of the camp, the statement revealed.

The student was accompanied by the Head of the Junior School, with the precautionary assessments scheduled for this afternoon and this evening.

The parents of the child have been notified and have made their way to Melbourne.

"Ballarat Grammar's outdoor and camp program provides wonderful learning experiences for students, with student's well-being and safety being paramount considerations," the spokesperson said in the written statement.

"However, as with any incident of this nature, a full review will be undertaken to assure the utmost safety for our students now and in the future."