Mrs Jephson is campaigning for the introduction of a proficiencytest for mobility scooter users, to make them for disabled users only, and to have identification on scooters.
Graham Cluley, a senior consultant for security firm Sophos, thinks that children should sit an internet proficiencytest in the same way as many do currently before riding a bike on the road.
Because California has so many schoolchildren 5.8m of them, of whom 1.5m have only limited proficiency in English it needs, the teachers say, a special test of its own, and not one pulled willy-nilly off the national shelf.