Add EYFSP indicators and filters to data dictionary

[robert-tarrant]

Brief overview of changes

Update data dictionary with EYFSP indicators and filters

Why are these changes being made?

For API compatability

Detailed description of changes

data_dictionary.csv updated with new items

[Ethan-Roy-2025]

Thank you @robert-tarrant! Just had a quick look at this, should there not be a 'Winter-born' filter item in the 'term_of_birth' filter for completeness? Please let me know if I have misunderstood the filter.

[robert-tarrant]

Thank you @robert-tarrant! Just had a quick look at this, should there not be a 'Winter-born' filter item in the 'term_of_birth' filter for completeness? Please let me know if I have misunderstood the filter.

@Ethan-Roy-2025 Nah no worries! The filter uses the school terms rather than the real seasons, which is why it only has three. I was also a bit confused by some aspects of that filter, but the guidance here helped clear things up: https://explore-education-statistics.service.gov.uk/methodology/early-years-foundation-stage-profile-results#content-section-3-content-15

[Ethan-Roy-2025]

Thank you @robert-tarrant! Just had a quick look at this, should there not be a 'Winter-born' filter item in the 'term_of_birth' filter for completeness? Please let me know if I have misunderstood the filter.

@Ethan-Roy-2025 Nah no worries! The filter uses the school terms rather than the real seasons, which is why it only has three. I was also a bit confused by some aspects of that filter, but the guidance here helped clear things up: https://explore-education-statistics.service.gov.uk/methodology/early-years-foundation-stage-profile-results#content-section-3-content-15

Thank you for correcting my understanding on this! That link was very useful!

[robert-tarrant]

@rmbielby this should contain everything now, have added breakdown / breakdown_topic