She will appear at York Magistrates’ Court on 8 April 2013.
York College will be summonsed to court for health and safety breaches.
Detective Chief Inspector Nigel Costello, of North Yorkshire Police, said:
This has been a very distressing case for everyone involved, not least for Lydia’s family who have suffered an extremely tragic loss.
Our thoughts are with them and specially trained officers continue to support them through this very difficult time.
The matter is now in the hands of the criminal justice system and we await the outcome of any subsequent court proceedings.