In considering expressing your preference (not choice), I would visit each school and consider-
Ofsted performance over time - always Outstanding or Good and a recent full inspection is a safer bet, but those that have improved from Inadequate or RI and have a recent full inspection and other evidence of secure improvement are worth considering. New schools without a full inspection - look at other schools of the same phase in the trust and the performance of the head’s previous schools.
Results - KS2, phonics, progress.
Staff - do they have a good mix of staff including more experienced teachers? Are there any male teachers? Do teachers stay or do they have lots of cover by supply or TAs?
The Head and the LA / trust.
Pupil destinations - does the school have feeder links to a secondary school - is it also a good school? Do children stay to 10/11 or do they leave for the independent sector at 7 / 11 - this may be a sign of confidence in the teaching.
Finances of the school - are they secure or do they have a deficit?
The quality of the building and playing field / playground? Do they have enough space? Is the building well maintained?
Capacity of the school and number on roll. It’s expensive to run a school that is struggling to recruit.
Do they operate mixed year teaching?
School cohort - where are they on Free School Meals, SEND, ESL, number of boys and girls on roll? Do they have a stable cohort or do children often move on and off roll?
Extra curricular activities and links with arts and sports organisations. Is it a rich educational offer?
Travel to school.
Wrap around care - personally I would not discount an Outstanding, high performance school for a lack of childcare.
Express your preference wisely - include a safe preference otherwise if there is a large cohort you could be send elsewhere. Read the admissions policies. Would your child have gained a place in previous years? Have they increased / decreased the Published Admission Number? Are there new housing developments that may mean the previous information will be out of date.