The school, on Ferrybridge Road, Castleford, was closed today (Monday, March 2) after an unexpected power cut.
In a text sent to parents, the school said: "Unfortunately, due to a power outage, there is currently no electricity at Castleford Academy. As a result, we are closed to pupils today. A text will come out later today with any updates."
However, power has since been restored and the school will reopen to all pupils tomorrow.
Almost 1,400 students are enrolled at the school.
New students at Outwood Academy Hemsworth enjoy summer school with ex-footballer Bruce Dyer
How to claim £150 towards your child's school uniform and PE kit
Wakefield Council ordered to apologise after autistic Outwood Grange Academy student missed over a year of schooling due to delays in his care and poor record keeping
20 things for kids to do in Wakefield, Pontefract and Castleford this summer
Ex-pro footballer Bruce Dyer helps pupils brush up on their football skills
In a statement, the Academy said: "Castleford Academy is open as normal on Tuesday 3rd March. Northern Powergrid restored the electric supply to the school this morning and fixed the underlying issue this afternoon. Thank you for your support."