As teacher it always amazed me how individual and distinct all schools are, as what tends to set the ethos of a school is the HT and the years of built-up tradition and practice.
As a general guide:
All schools are required by law to have a daily act of Christian worship, but in a non faith school this may be based around general morals/principles. Schools can apply for an exemption if they are very diverse and can demonstrate that other faiths are in a majority.
All maintained schools must teach the national curriculum plus RE, but exactly how they do it is determined by the individual policy of the school, set by the HT, staff and governing body.
The syllabus for RE in community schools (non faith schools) is determined by each local authority, to reflect the needs of the local population. However, it must cover all major world faiths, although the degree to which it does so and what is covered is, again, locally determined.
As far as I recall, faith schools determine their RE syllabus, but legally must also give some coverage to other faiths.
Admissions policies will be different, especially in voluntary controlled schools.
Behaviour policies are not likely to be massively different - they always tends to focus on not hurting others, working hard and following the school rules! - but the tolerance of what is acceptable or not again is set by the HT.