Can I ask a student who has already submitted a test to start again with a new attempt?

No, this isn’t an option for tests with a single attempt such as Test & Train Timed Practice Test, or Empower Competency Test. But in exceptional circumstances you can contact our Help Centre underlined text to be hyperlinked to https://cambridgeonehelp.cambridge.org/hc/en-gb/requests/new] to request for an individual test to be reset. Unit Progress Tests are different and allow for two attempts.