**Research has not established one ideal preschool starting age for every child.** For your two-year-old, a good nursery can be a reasonable choice now; starting preschool at three or four is also reasonable. The decision depends on the care available, your child’s needs, and your family’s circumstances.

The terms can be confusing: “nursery,” “preschool,” and “childcare” often overlap. Look at what the programme actually provides for children his age.

There is useful scientific evidence:

- **The US NICHD study**, summarised in 2006, followed more than 1,000 children from birth. Higher-quality childcare was associated with modestly better language and learning outcomes. Family experiences also had strong associations with development. This was an observational study, so it could not establish cause and effect or identify an ideal starting birthday. [NICHD findings](https://www.nichd.nih.gov/newsroom/releases/family_characteristics_influence_development)
- **England’s SEED study**, reported in 2020, examined early education and later school outcomes. Associations varied with family disadvantage and hours of attendance. Earlier attendance was linked to better learning outcomes for some disadvantaged children, while greater group-care attendance was associated with poorer scores on some social and emotional measures. These findings do not establish a universal starting age. [SEED research brief](https://assets.publishing.service.gov.uk/media/5e4e5c1ed3bf7f393c09149e/SEEDage5briefFEB.pdf)

**My practical advice is to assess the particular nursery before deciding on the age.** For a two-year-old, look for warm, responsive carers, small groups, and activities suited to toddlers. Staff should accommodate his naps, feeding, and toileting needs. The American Academy of Pediatrics provides a useful [centre-selection checklist](https://www.healthychildren.org/English/family-life/work-and-child-care/Pages/choosing-a-child-care-center.aspx).

If you enrol him, visit together first and arrange a gradual introduction where possible. Notice whether he develops trust in a caregiver and settles into the day; discuss persistent distress with staff. [AAP guidance on preparing for childcare](https://www.healthychildren.org/English/family-life/work-and-child-care/Pages/preparing-your-child-for-child-care.aspx)

If his current care provides attentive interaction, shared reading, play, and opportunities to meet other children, the evidence gives you no deadline to enrol him at two. You can choose the start date around a suitable programme and your family’s needs.