Education watchdog Ofsted is launching a website inviting parents to give their views of schools in England.
Parent View, launching later, offers a 12-question survey covering issues such as bullying and behaviour.
"Parents know how valuable the insight of other mums and dads can be when making choices about schools," said Ofsted chair, Baroness Morgan.
But teachers' union leader Christine Blower has warned that such anonymous reviews are "open to abuse".
Ofsted wants to give parents a stronger voice - and this online questionnaire is intended to allow parents to share their views on their children's schools.