Hello, I’m an experienced Nursery / Year R teacher and a mum so just wanted to share my thoughts.
I don’t think going at 3 is necessarily essential depending on your child’s birth date (autumn/spring/summer), but going to a nursery or pre-school for a year before school will have an enormous impact on your child’s ability to transition successfully to school. I have taught many children who never attended nursery and it can take them an entire term or two just to feel settled and able to access the whole curriculum successfully because they haven’t experienced a similar setting with so many people around before, and school can feel exhausting and overwhelming for them. Children who have only ever been with a child-minder often struggle with the transition to school too as they’ve had less socialisation with a variety of children and being part of a larger group regularly.
When children start school, there are of course lots of opportunities for learning through play - however this will be surrounded by 29 (and often more in the outside area) other children and require sharing, compromise and teamwork from the get go. All of these things are learnt at nursery - nurseries focus on the prime areas of learning (personal, social and emotional devlopment, physical development, communication and language) and these skills are of course taught at home and play groups, but expecting your child to be able to head into school with 29 other children and adapt straight away with no nursery experience would be difficult and often distressing for them.
On top of starting school, which is already a huge transition for any child, they are also immediately starting phonics, maths and topic lessons, which whilst all age appropriate and fun will still feel quite intense at the start and require a child to be able to follow a new, formal routine, focus and join in with 29 other children. Again, all the group singing, counting, general chit-chats that nursery do as whole classes are there to prepare children for school life.
School is like a huge community and expecting a child to join a community of hundreds of children is hard - being in a community of 25-30 children as a first experience makes that a lot easier! But, of course you know your child best. No teacher is going to judge your decision to not send your child to nursery and your child may start school and do amazing without nursery, but the evidence is there on the benefits of nursery so it’s worth bearing in mind. Going to nursery full time is not necessary (my daughter starts school in September and goes 2.5 days a week). She is very bright and we do so much at home/go out a lot, but nursery gives her socialisation and experiences that I physically cannot give her and experiencing a part of life where I’m not there is SO good for her and she is very ready for school. Nursery has helped her to thrive and a good one is worth its weight in gold to a child 😊
Even 1-2 days a week will be beneficial - Friday are often the quieter days at nurseries, so if you can offer a Friday they are more likely to accept part-time (this is how my daughter started at a sought after nursery as we only needed Fridays).
I’m sure whatever decision you make will work out, good luck 😊