WA high school left counting the cost

Hedland Senior High School has been left counting the cost of vandalism this morning after damage to classrooms and equipment occurred over night.

According to a notice sent to parents this morning by principal Kelly Summers, the School House building, a classroom in the Hardy House building and equipment in the pool area were all damaged.

Ms Summers said the school community was very disappointed at what had happened.

"Students have been kept away from damaged parts of the school this morning and alternative classrooms have been organised," she said in the notice.

"Due to the damage to pool equipment, the pool will be out of action for some time."

Ms Summers said the investigation into the vandalism was ongoing and encouraged anyone with knowledge of the events to speak to the South Hedland Police Station.