| pidp | Cross-wave person identifier (numeric) |
| languagegroupminor | Pupil's minor language group |
| senprovision | Provision types under the SEN code |
| idaci_s | IDACI score |
| idaci_r | IDACI rank |
| acadyr | Academic year |
| laestab | School code, the LA and ESTAB fields joined |
| urn | School unique reference number |
| ethnicgroupminor | Ethnic group |
| fsmeligible | Free school meal eligibility |
| everfsm_6 | Pupil recorded as eligible to FSM in last 6 yrs |
| everfsm_all | Pupil ever recorded as eligible to FSM |
| schoollunchtaken | Indicates whether a pupil in year 1, 2 or aged 4-6 in year X took a school lunch |