ESF vs Anfield

My son is studying Anfield nursery, I am thinking whether to change to other IS or not for my son in K1. I love the way that Anfield is so caring and family like style and the student there are happy and disciplined. I plan to put him to Anfield primary too, however, it won't guarantee with 50 seats provided for Year 1. Not sure about ESF, any comment or existing parents of ESF can share your observations and whether it guarantee it go straight for Year 1 of Primary. How's the students there

TIA