Which part of Brentwood?
In Shenfield, the school you would be looking at is St Mary’s. It is an outstanding school, and the ethos is what I think you are looking for with your reference to a proper uniform. For Foundation entry, it is extremely sought after.
I didn’t look at it myself, but St Peter’s in the South Weald area seemed similarly highly regarded by friends.
Are you a regular church goer? You would be expected to attend St Mary’s (and I think the same is true for St Peter’s). For Foundation Year entry, I think they often don’t make it that far down the list after the church’s electoral roll.
There is a register to sign after church services. This is to evidence regular church attendance for a sought after CoE state secondary in Brentwood called Beckett Keys. I understand that there are good rates of entry to the Essex grammar schools from St Mary’s.
This being said, a lot of the schools in the area are excellent, whether denominational or not. It isn’t an area that you really have to worry about ‘sink schools’.
Having said all that, I actually chose a different primary school, because I felt it suited my child better, and I am happy with that decision.
Don’t know anything about Billericay schools, but it is a pleasant area. Much more attractive high street than Shenfield or Brentwood, and property is more affordable. If you need to commute into London, then Shenfield is the best bet, as the fast train to Stratford-Liverpool Street goes from here.
How does the system work for in-year admissions?