Actually being able to bring up a list and check if a child is on it.
Being able to bring up a list and check if the children who are on the list are OK. Like during covid, which is how this came up in the first place - not knowing where tens of thousands of children were and if they were OK.
Being able to bring up a list and see that x% are on it due to failures in SEND provision and use it to campaign for different/better/higher funded provision for children with SEND.
Being able to see particular councils are so bad at providing support for SEND, there is a huge disparity in the numbers EHE compared to an area that has better provision.
Being able to track over longer timescales and demonstrate that EHE children go on to higher education/different keystages, suggesting that there are particular failings in the national curriculum at a certain point. Or that a particular academy chain has a disproportionate number of parents EHE just before exams covers up offrolling and illegal exclusions
Being able to demonstrate that EHE is beneficial for those who do it and it doesn't harm their adult prospects.
Being able to show that there isn't a problem with EHE being used to deflect attention away from abuse.
Being able to show that EHE teenage girls that are deregistered do or don't tend to become parents themselves within 18 months.
Being able to show that the vast majority of EHE families don't have criminal records for violent or sexual offences or concerns reported by schools/doctors/neighbours/grandparents and it's therefore not necessary to flag it up as a potential issue....
There is so much in data that can be done to improve things for children, both current and future, if they have accurate details in one accessible secure record.