PRACTICE AND PRACTISE
|In British English the noun practiCe is written with a c and the verb to practiSe is written with an s. Both words are pronounced the same way. In American English both are usually written with a c.
Remember, to practise is followed by the -ing form, e.g. As soon as I'd passed my driving test I practised parking in the local streets as I didn't feel I'd done sufficient during my lessons.
A best practice is a technique, method or process that is believed to be more effective at delivering a particular outcome than any other technique, method, process, etc.
That won't work in practice.
Betty needs to practise her French.
Debra’s father is a doctor and has just opened his own practice.